Previous Thread
Next Thread
Print Thread
Where is the headlight relay, 1979 Dodge W150 truck? #2793860
07/07/20 11:23 AM
07/07/20 11:23 AM
Joined: Aug 2006
Posts: 2,487
God's Country Maryland
GODSCOUNTRY340 Offline OP
top fuel
GODSCOUNTRY340  Offline OP
top fuel

Joined: Aug 2006
Posts: 2,487
God's Country Maryland
Can't find it, where is it hidden?


I love the smell of Deer guts in the morning, it smells like... VICTORY!
Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: GODSCOUNTRY340] #2793862
07/07/20 11:27 AM
07/07/20 11:27 AM
Joined: Jan 2003
Posts: 32,883
Grand Prairie,Texas
stumpy Offline
I Win
stumpy  Offline
I Win

Joined: Jan 2003
Posts: 32,883
Grand Prairie,Texas
I don't believe they had one.

Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: stumpy] #2793872
07/07/20 11:59 AM
07/07/20 11:59 AM
Joined: Aug 2006
Posts: 2,487
God's Country Maryland
GODSCOUNTRY340 Offline OP
top fuel
GODSCOUNTRY340  Offline OP
top fuel

Joined: Aug 2006
Posts: 2,487
God's Country Maryland
Is there a circuit breaker somewhere? There's no fuse for the headlights in the fusebox. Can't get any juice to the headlights or dimmer switch on the floor. Parking lights and turn signals work. I'm getting ready to pull the headlight switch after lunch.


I love the smell of Deer guts in the morning, it smells like... VICTORY!
Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: GODSCOUNTRY340] #2793886
07/07/20 12:36 PM
07/07/20 12:36 PM
Joined: Aug 2011
Posts: 2,843
Pattison Texas
CSK Online shake_head
master
CSK  Online Shake_Head
master

Joined: Aug 2011
Posts: 2,843
Pattison Texas
Originally Posted by GODSCOUNTRY340
Is there a circuit breaker somewhere? There's no fuse for the headlights in the fusebox. Can't get any juice to the headlights or dimmer switch on the floor. Parking lights and turn signals work. I'm getting ready to pull the headlight switch after lunch.


built into the Headlight switch


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: CSK] #2794032
07/07/20 07:17 PM
07/07/20 07:17 PM
Joined: Feb 2003
Posts: 16,117
Mesa, Arizona
D
dart4forte Offline
I Live Here
dart4forte  Offline
I Live Here
D

Joined: Feb 2003
Posts: 16,117
Mesa, Arizona
Originally Posted by csk
Originally Posted by GODSCOUNTRY340
Is there a circuit breaker somewhere? There's no fuse for the headlights in the fusebox. Can't get any juice to the headlights or dimmer switch on the floor. Parking lights and turn signals work. I'm getting ready to pull the headlight switch after lunch.


built into the Headlight switch
iagree


You could go with a HL relay kit that Crackedback sells.

Last edited by dart4forte; 07/07/20 07:18 PM.

“So if it’s on the internet it must be true”

Abe Lincoln
Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: dart4forte] #2794039
07/07/20 07:34 PM
07/07/20 07:34 PM
Joined: Aug 2005
Posts: 11,543
chicagoland,usa
B
buildanother Offline
I Live Here
buildanother  Offline
I Live Here
B

Joined: Aug 2005
Posts: 11,543
chicagoland,usa
No relay I recall. Had all 4 h4's go out on my 79 warlock II years ago and a new headlight switch straightened it out. Of course, I tried not running the high beams too long at nights after that, but damn they lit up the boony roads well.

Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: buildanother] #2794064
07/07/20 08:36 PM
07/07/20 08:36 PM
Joined: Aug 2006
Posts: 2,487
God's Country Maryland
GODSCOUNTRY340 Offline OP
top fuel
GODSCOUNTRY340  Offline OP
top fuel

Joined: Aug 2006
Posts: 2,487
God's Country Maryland
Well, pulled the switch, used a jumper wire on the harness and got all 4 headlights working. Checked the switch and there's no continuity between the power and headlight terminal. Thanx for all the input.


I love the smell of Deer guts in the morning, it smells like... VICTORY!
Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: GODSCOUNTRY340] #2794068
07/07/20 08:55 PM
07/07/20 08:55 PM
Joined: Jan 2003
Posts: 18,389
UPPER MICHIGAN, MARQUETTE COUN...
N
NITROUSN Offline
I Live Here
NITROUSN  Offline
I Live Here
N

Joined: Jan 2003
Posts: 18,389
UPPER MICHIGAN, MARQUETTE COUN...
Headlights are on a non fused separate power feed. Tail lights have a fused feed from the fuse panel. There should be a black wire at the switch 10 or 12 gauge and that should have power from the fuse link. I think the yellow goes to the dimmer switch. Check for power at the black. If no power you need to trace the wires. Suspect area is the bulkhead.

Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: NITROUSN] #2794076
07/07/20 09:10 PM
07/07/20 09:10 PM
Joined: Jan 2003
Posts: 10,486
Freeport IL USA
poorboy Offline
I Live Here
poorboy  Offline
I Live Here

Joined: Jan 2003
Posts: 10,486
Freeport IL USA
Adding relays is a great idea, it takes a lot of load off the switch.

Modern switches are not anywhere near the quality the original switches were. I put 4 different aftermarket switches on my son's car before we got one that actually worked. Each switch had a different issue. All 4 switches were from local auto parts stores (each store only had one on the shelf), but once out of the box, all 4 looked identical.

Be forewarned, just because you have installed a new headlight switch, that no longer means you have installed a good switch. Gene

Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: poorboy] #2794569
07/09/20 02:50 AM
07/09/20 02:50 AM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline
Too Many Posts
383man  Offline
Too Many Posts
3

Joined: Jan 2003
Posts: 27,421
Balt. Md
Originally Posted by poorboy
Adding relays is a great idea, it takes a lot of load off the switch.

Modern switches are not anywhere near the quality the original switches were. I put 4 different aftermarket switches on my son's car before we got one that actually worked. Each switch had a different issue. All 4 switches were from local auto parts stores (each store only had one on the shelf), but once out of the box, all 4 looked identical.

Be forewarned, just because you have installed a new headlight switch, that no longer means you have installed a good switch. Gene


Adding a relay is a great idea. Back in the 90's we had trouble with Dodge trucks burning the contacts on the headlite switches and headlties going out. It was because of the high current the headlites carry that over time it burned the switch. So they came out with a TSB to install a relay for the headlites to take the load off the switch. I installed many back then as they even had a part # for the harness with the relay they gave us to wire in. Ron

Last edited by 383man; 07/09/20 02:52 AM.
Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: 383man] #2794630
07/09/20 09:32 AM
07/09/20 09:32 AM
Joined: Jan 2003
Posts: 18,389
UPPER MICHIGAN, MARQUETTE COUN...
N
NITROUSN Offline
I Live Here
NITROUSN  Offline
I Live Here
N

Joined: Jan 2003
Posts: 18,389
UPPER MICHIGAN, MARQUETTE COUN...
Quote
Adding a relay is a great idea. Back in the 90's we had trouble with Dodge trucks burning the contacts on the headlite switches and headlties going out. It was because of the high current the headlites carry that over time it burned the switch. So they came out with a TSB to install a relay for the headlites to take the load off the switch. I installed many back then as they even had a part # for the harness with the relay they gave us to wire in. Ron
Ron that was on the 94 and newer trucks. I agree we also updated a lot of them. Still a good idea on the older trucks.

Re: Where is the headlight relay, 1979 Dodge W150 truck? [Re: NITROUSN] #2794990
07/10/20 12:12 AM
07/10/20 12:12 AM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline
Too Many Posts
383man  Offline
Too Many Posts
3

Joined: Jan 2003
Posts: 27,421
Balt. Md
Originally Posted by NITROUSN
Quote
Adding a relay is a great idea. Back in the 90's we had trouble with Dodge trucks burning the contacts on the headlite switches and headlties going out. It was because of the high current the headlites carry that over time it burned the switch. So they came out with a TSB to install a relay for the headlites to take the load off the switch. I installed many back then as they even had a part # for the harness with the relay they gave us to wire in. Ron
Ron that was on the 94 and newer trucks. I agree we also updated a lot of them. Still a good idea on the older trucks.


Your right as I forgot what year it started. Sometimes we got trucks in for it that already had it done so I would save the relay and harness and over the years I saved about 4 of them. Ron







Powered by UBB.threads™ PHP Forum Software 7.7.1