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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956298
08/22/21 12:10 PM
08/22/21 12:10 PM
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Joined: Sep 2003
Posts: 20,536
north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 20,536
north of coder
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[only mod would the the upgraded digital tach added to the original Tic Toc tac which doesnt work,.....quote] if you upgraded your tic-tock tach to digital and it still doesn't work, i would start there. 
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: BDW]
#2956300
08/22/21 12:11 PM
08/22/21 12:11 PM
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Joined: Aug 2004
Posts: 2,131
New Mexico
JMCFAN
OP
top fuel
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OP
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Joined: Aug 2004
Posts: 2,131
New Mexico
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I'd start pulling each harness at the firewall (engine side) to see when it goes away. Ok...just did this... 2nd or middle harness.....pull it and draw is zero..... now...hmmmm
68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: Sniper]
#2956303
08/22/21 12:14 PM
08/22/21 12:14 PM
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Joined: Aug 2004
Posts: 2,131
New Mexico
JMCFAN
OP
top fuel
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OP
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Joined: Aug 2004
Posts: 2,131
New Mexico
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Agree... will pull ignition switch cable next. Its the middle firewall harness that kills the draw...
You are making assumptions when you say "works fine". Something is not working fine and until you physically disconnect EACH item on the list and check you cannot assume it "works fine".
For example, your ignition could very well draw 7 amps in use, but is still drawing current when it should be off. So while it make "work fine" in start and run, it should not be drawing current at all in off. Until you disconnect it you won't know. [/quote]
68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956306
08/22/21 12:21 PM
08/22/21 12:21 PM
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Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
NITROUSN
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
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Newly restored 70 RR, Runs great,,,,but, I have a 5.4 amp draw on battery when measured at the neg battery terminal when car is off, Have pulled individual fuses with no change, where should I start? Freshly painted....so grounding issue? Does the horn work? I know on a 1969 the horn relay is not on a fuse.
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: NITROUSN]
#2956308
08/22/21 12:25 PM
08/22/21 12:25 PM
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Joined: Aug 2004
Posts: 2,131
New Mexico
JMCFAN
OP
top fuel
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OP
top fuel
Joined: Aug 2004
Posts: 2,131
New Mexico
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Newly restored 70 RR, Runs great,,,,but, I have a 5.4 amp draw on battery when measured at the neg battery terminal when car is off, Have pulled individual fuses with no change, where should I start? Freshly painted....so grounding issue? Does the horn work? I know on a 1969 the horn relay is not on a fuse. Yes horn works
68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956312
08/22/21 12:34 PM
08/22/21 12:34 PM
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Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
NITROUSN
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
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Factory radio? You also said the wipers are not working. Have you unplugged the motor and the switch?
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: NITROUSN]
#2956320
08/22/21 12:47 PM
08/22/21 12:47 PM
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Joined: Aug 2004
Posts: 2,131
New Mexico
JMCFAN
OP
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OP
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Joined: Aug 2004
Posts: 2,131
New Mexico
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Factory radio? You also said the wipers are not working. Have you unplugged the motor and the switch? Factory radio, was set off for refurb to factory standards works.... Unplugged the motor. Not the switch...yet- next Unplugged both ignition and turn signal harness ( 2 large flat plugs)--- no change
68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956321
08/22/21 12:53 PM
08/22/21 12:53 PM
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Joined: Aug 2004
Posts: 2,131
New Mexico
JMCFAN
OP
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OP
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Joined: Aug 2004
Posts: 2,131
New Mexico
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Starter possible? Guess I can pull cable at the starter,,,,,
68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956327
08/22/21 01:00 PM
08/22/21 01:00 PM
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Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
NITROUSN
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
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Starter possible? Guess I can pull cable at the starter,,,,, You got to try something. At 7 amps what ever it is should be warm to the touch.
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: NITROUSN]
#2956329
08/22/21 01:05 PM
08/22/21 01:05 PM
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Joined: May 2019
Posts: 6,589
nowhere
Sniper
master
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master
Joined: May 2019
Posts: 6,589
nowhere
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I'd start pulling each harness at the firewall (engine side) to see when it goes away. Ok...just did this... 2nd or middle harness.....pull it and draw is zero..... now...hmmmm Ok, now stop right here. You already found something that indicates the problem area. Something wired in to this connection is potentially the issue. Either that or it's the feed to the problem. What does the schematic in your FSM say is connected here?
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956330
08/22/21 01:09 PM
08/22/21 01:09 PM
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Joined: Jan 2003
Posts: 10,987
North Dakota
6PakBee
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,987
North Dakota
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Unless I am reading the wiring diagram incorrectly, the middle bulkhead connector has:
Ignition switch #1
Ignition switch #2
windshield washer
turn signal switch
ammeter
temp gauge
oil pressure gauge
alternator
I'd leave the bulk head connector disconnected, make up a short jumper, and go through the terminals one at a time until you find the culprit. You are absolutely going to need a wiring diagram unless you are one of those lucky ones and just fall into it. There are two blacks in that connector, one larger than the other. That's the one I'm betting on as there is a splice on the passenger compartment side that feeds a bunch of things.
Just remember the alternator wire and the battery wire are tied together through the ammeter.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: 6PakBee]
#2956338
08/22/21 01:30 PM
08/22/21 01:30 PM
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Joined: Aug 2004
Posts: 2,131
New Mexico
JMCFAN
OP
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OP
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Joined: Aug 2004
Posts: 2,131
New Mexico
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Unless I am reading the wiring diagram incorrectly, the middle bulkhead connector has:
Ignition switch #1
Ignition switch #2
windshield washer
turn signal switch
ammeter
temp gauge
oil pressure gauge
alternator
I'd leave the bulk head connector disconnected, make up a short jumper, and go through the terminals one at a time until you find the culprit. You are absolutely going to need a wiring diagram unless you are one of those lucky ones and just fall into it. There are two blacks in that connector, one larger than the other. That's the one I'm betting on as there is a splice on the passenger compartment side that feeds a bunch of things.
Just remember the alternator wire and the battery wire are tied together through the ammeter. That is a awesome idea!! I do have FSM and a stand alone wiring diagram
68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956339
08/22/21 01:34 PM
08/22/21 01:34 PM
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Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
NITROUSN
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
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Looking back on what is on that bulkhead. Washers. Do the washers work? I know the wipers have issues.
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: NITROUSN]
#2956340
08/22/21 01:40 PM
08/22/21 01:40 PM
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Joined: Aug 2004
Posts: 2,131
New Mexico
JMCFAN
OP
top fuel
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OP
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Joined: Aug 2004
Posts: 2,131
New Mexico
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Looking back on what is on that bulkhead. Washers. Do the washers work? I know the wipers have issues. No they do not... the wiper is one of Jules last and I have disconnected on the top bulk head connector., I need to disconnect the switch..tough to get to... Disconnected washer pump.. no change
Last edited by JMCFAN; 08/22/21 01:42 PM.
68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956344
08/22/21 01:50 PM
08/22/21 01:50 PM
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Joined: May 2019
Posts: 6,589
nowhere
Sniper
master
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master
Joined: May 2019
Posts: 6,589
nowhere
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just remember that the ammeter is the feed for everything electrical in the car, so disconnecting this connector may not be as useful as it could be.
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956356
08/22/21 02:19 PM
08/22/21 02:19 PM
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Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
NITROUSN
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,433
UPPER MICHIGAN, MARQUETTE COUN...
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Key light go off and on? 4 way flashers work?
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: Sniper]
#2956369
08/22/21 03:23 PM
08/22/21 03:23 PM
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Joined: Jan 2011
Posts: 16,166
Central Florida
larrymopar360
Stud Muffin
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Stud Muffin
Joined: Jan 2011
Posts: 16,166
Central Florida
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just remember that the ammeter is the feed for everything electrical in the car, so disconnecting this connector may not be as useful as it could be. You can just bypass it like on the trucks right? I bypassed the one on my truck with a brass bolt and nut and wrapped in electrical tape. The amp gauge is pretty useless in these probably anyhow.
Facts are stubborn things.
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: JMCFAN]
#2956394
08/22/21 05:26 PM
08/22/21 05:26 PM
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Joined: Aug 2007
Posts: 606
Mass
charge70
mopar
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mopar
Joined: Aug 2007
Posts: 606
Mass
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Also check starter relay / starter, things that are wired "hot most of the time" w/o the key on. If no luck there, pull each fuse one at a time. Should be able to check draw at battery or jumping the fuse blade ends at the box to see if there is draw or not. I did pull each fuse....no change Did you pull each fuse one at a time or all at one time.Sometimes a draw can be a combination of 2 problems. Just a thought.
1970 Dodge Charger R/T S.E.
1969 Dodge Dart GTS 440 M-Code
1970 Dodge Charger 500 383/4-speed w/A.C.
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: charge70]
#2956396
08/22/21 05:27 PM
08/22/21 05:27 PM
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Joined: Aug 2004
Posts: 2,131
New Mexico
JMCFAN
OP
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OP
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Posts: 2,131
New Mexico
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No I did it one at a time,,, will try that as well... thanks!! Also check starter relay / starter, things that are wired "hot most of the time" w/o the key on. If no luck there, pull each fuse one at a time. Should be able to check draw at battery or jumping the fuse blade ends at the box to see if there is draw or not. I did pull each fuse....no change Did you pull each fuse one at a time or all at one time.Sometimes a draw can be a combination of 2 problems. Just a thought.
68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
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Re: Electrical draw on new resto,,,,where to start,,,
[Re: Sniper]
#2956722
08/23/21 06:36 PM
08/23/21 06:36 PM
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Joined: Aug 2004
Posts: 2,131
New Mexico
JMCFAN
OP
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OP
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Joined: Aug 2004
Posts: 2,131
New Mexico
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just remember that the ammeter is the feed for everything electrical in the car, so disconnecting this connector may not be as useful as it could be. Well after going through the starter relay and starter it appears its the ammeter feed.... no need to dissect that.... jeeez
68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
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