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Lift Pump Relay Mod?

romadant
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romadant

romadant

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I'm usually pretty good at using search or google to find stuff but I can't find this.People keep referring to an article/post from Michael concerning a LP relay mod but I can't find it anywhere.Does anyone have a link or know where it is?Thank you in advance!

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romadant

romadant

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So I'll have the pusher/big line kit from Vulcan soon and I want to switch the LP power source from the ECM to a direct 12v supply. I figure I should also add the 'interrupt' relay to stop the LP when the engine is cranking. How does the attached diagram look? Any problems?* Sorry in advance for the crappy drawing. :)

LP Power and Interrupt.pdf

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flagmanruss

flagmanruss

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When I had my AirDog installed... I cut the leads off the OEM lift pump to plug into the truck harness for the relay trigger. Soldered & liquid tape to seal the connection. The main power for the new lift pump relay is off a hot lead from the battery. Best of both worlds.

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Mopar1973Man

Mopar1973Man

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So I'll have the pusher/big line kit from Vulcan soon and I want to switch the LP power source from the ECM to a direct 12v supply. I figure I should also add the 'interrupt' relay to stop the LP when the engine is cranking. How does the attached diagram look? Any problems? * Sorry in advance for the crappy drawing. :)

Not a bad idea... Good design... :wink:
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