couple wiring questions

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Mar 16, 2008 | 07:17 PM

00silverGTP

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From: Ohio

couple wiring questions

ok I am starting to wire my kit up.
1. should I use a separate relay for the purge?
2. where is the best place to mount the relays? I mounted mine by the battery.
3. can I use all one ground?

Mar 16, 2008 | 07:46 PM

BOTTLEFEDLS1Z

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From: STL

Quote:

Originally Posted by 00silverGTP

ok I am starting to wire my kit up.
1. should I use a separate relay for the purge?
2. where is the best place to mount the relays? I mounted mine by the battery.
3. can I use all one ground?

1. NO
2. I mounted my heater relay in the back and the kit relay is inside the glove box
3. Depends, but you can ground the relay and the solenoids off the same ground. Do not ground anything to the ECU ground connection

Mar 16, 2008 | 09:03 PM

00silverGTP

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From: Ohio

so I only use one relay for the kit and purge and one for the heater?

Mar 16, 2008 | 09:03 PM

Speed Density

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Quote:

Originally Posted by BOTTLEFEDLS1Z

3. Depends, but you can ground the relay and the solenoids off the same ground. Do not ground anything to the ECU ground connection

Curious, but why not?

Mar 17, 2008 | 08:44 PM

BOTTLEFEDLS1Z

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Originally Posted by Speed Density

Curious, but why not?

For example, if you had a progressive controller like a FJO, you don't want to ground to the ECU. A pulsing solenoid can generate electrical noise that can interfere with the ECU