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Re: EFI- old MoPar- where to get "true power"? Start/run
[Re: CrAzYMoPaRGuY]
#2593797
12/18/18 03:23 PM
12/18/18 03:23 PM
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Joined: Jun 2004
Posts: 3,380
St. Charles, MO
wingman
Uncreative Title
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Uncreative Title
Joined: Jun 2004
Posts: 3,380
St. Charles, MO
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Did I miss something? Not sure why you need to keep the ballast at all. Just hook it up like you would an MSD by attaching the start and run wires and get rid of the ballast--that should give you the consistent voltage you need.
1969 Dodge Coronet Super Bee 383 A4
1970 Plymouth Road Runner 440 FC7 (sold)
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Re: EFI- old MoPar- where to get "true power"? Start/run
[Re: BDW]
#2593910
12/18/18 07:26 PM
12/18/18 07:26 PM
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Joined: Sep 2007
Posts: 14,889
up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Still need to combine start and run, relays aren't small. Yes, they are. Every new car out there used a bunch of relays to power high loads. they are not big, they are not expensive and they are not a mystery to be avoided. Nor do you need to dance around in the nude and sacrifice a chicken to the god of electrons. Any other objections? This 30A automotive grade relay is 2" tall and about 1.24" square, Under $4 and includes a mounting tab. the connector if you want one. Under $4 again.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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Re: EFI- old MoPar- where to get "true power"? Start/run
[Re: CrAzYMoPaRGuY]
#2593943
12/18/18 08:25 PM
12/18/18 08:25 PM
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Joined: Aug 2007
Posts: 6,095
Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,095
Valencia, España
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EFI doesn’t suck lot of load. We have talked about that in several threads. Take the power from the Blue run circuit and install a Diode between ballast prongs to get 12 volts on both ign positions without affect the power to coil while in RUN
Last edited by NachoRT74; 12/18/18 08:25 PM.
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: EFI- old MoPar- where to get "true power"? Start/run
[Re: Supercuda]
#2593963
12/18/18 09:15 PM
12/18/18 09:15 PM
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Joined: May 2005
Posts: 4,727
Florida
BDW
master
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master
Joined: May 2005
Posts: 4,727
Florida
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Still need to combine start and run, relays aren't small. Yes, they are. Every new car out there used a bunch of relays to power high loads. they are not big, they are not expensive and they are not a mystery to be avoided. Nor do you need to dance around in the nude and sacrifice a chicken to the god of electrons. Any other objections? This 30A automotive grade relay is 2" tall and about 1.24" square, Under $4 and includes a mounting tab. the connector if you want one. Under $4 again. So you're saying I can replace the 1/4" diode with a 2"x4" relay? That's great news, thx for the insight.
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Re: EFI- old MoPar- where to get "true power"? Start/run
[Re: CrAzYMoPaRGuY]
#2594082
12/19/18 01:58 AM
12/19/18 01:58 AM
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Joined: Oct 2004
Posts: 16,479
Canada
CrAzYMoPaRGuY
OP
I Live Here
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OP
I Live Here
Joined: Oct 2004
Posts: 16,479
Canada
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My buddy opted to run power from the ballast to a relay, and has the ECU powered from the battery- interrupted by lack of ballast resisitor power. We might run the diode. Just getting a diode isn't easy on a Sunday!  It's a Professional Products EFI kit, says to run direct to coil but cannot drop below 9 volts. The instructions are more confusing than the actual work! lol This is the same ECU that had me ask a couple months ago.... "Rear wheel torque for 440"!!! It wanted a value. We ended up using 400 ft lbs. Geez
CrAzYMoPaRGuY
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the ‘nucks ! 