Which 4 wires to hook up to make conversion start?

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Dec 25, 2002 | 04:54 PM

C4VetteLS1

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Which 4 wires to hook up to make conversion start?

I have a whole bunch of extra wires that dont go anywhere with the conversion. Im going to have a buddy bring his camaro over so i can compare where they go. But everything was left on the motor so everythings hooked up that should be. Where are the four wires that need to be hooked up (POWER, IGNITION, FUEL PUMP AND STARTER)? Which wires are they. im trying to get the motor started.

Dec 26, 2002 | 12:30 AM

John B

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Re: Which 4 wires to hook up to make conversion start?

Did someone modify a harness for you or are you trying to use a stock F-body or Y-body harness?

Dec 26, 2002 | 04:03 PM

C4VetteLS1

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Re: Which 4 wires to hook up to make conversion start?

stock harness, with the VATS bypass homemade.

Dec 27, 2002 | 01:25 AM

John B

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Re: Which 4 wires to hook up to make conversion start?

You really need to take a look at a wiring diagram because you need to also connect the proper relays for the fuel pump and electric fans. You'll have more than 4 wires to hook up. As for the wires to fire it up you should just need two power feeds to the PCM (one hot and one ignition controlled), a lead to the fuel pump relay and ground.

Dec 27, 2002 | 11:57 AM

C4VetteLS1

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Re: Which 4 wires to hook up to make conversion start?

I have a big race fuel pump running through a seperate relay that is switch operated. I also have the electric fans switch operated.

Thanks for the reply. What other things do you think need to be hooked up? And where do i find the two power feeds to the PCM? Im really new to this EFI stuff.

Dec 28, 2002 | 02:19 PM

C4VetteLS1

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Re: Which 4 wires to hook up to make conversion start?

ttt? anyone?

Dec 28, 2002 | 10:33 PM

John B

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Re: Which 4 wires to hook up to make conversion start?

<blockquote>quote:<hr /> And where do i find the two power feeds to the PCM <hr /></blockquote>Actually any continuous +12v hot lead will work and then find a +12v that only gets hot when the ignition key is turned to the "on" position.

<blockquote>quote:<hr />What other things do you think need to be hooked up? <hr /></blockquote>Don't forget to hook up an oil pressure guage, water temp and tach!