Confused about ecu and ignition relays - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

badoon · 12-09-2009, 11:21 PM

I hope this isnt a dumb question, but where do the ECU and Ignition relays plug in?

I have a Zenki s14 sr20det in my s13.
The wiring is almost done, I just realized I have no clue where to plug em in.There the two square bright blue plugs on the SR harness, None of the info I ve found seems to explain these....

g6civcx · 12-09-2009, 11:43 PM

It's easy. The S14 has the relays on the engine harness next to the ECU. The S13 has the relays on the body harness.

There are a couples of a way to do it.

You can remove the relays from the engine harness and use the ones already on the body.

You can give power to the relays and ignore the relays already on the body.

Whichever way you want to do is fine.

I personally would just clip the relays and throw them out of the engine harness. It keeps your ECU area cleaner.

I haven't memorised the S14 SR wiring colours. Otherwise I'd post them up for you.

Tell me the wires you need to hook up and I'll tell you where they go on the S13 body harness.

badoon · 12-10-2009, 12:08 AM

Ok, ill do that for the relays. I ll know 2mrow after work if ther are any wires I cant figure out. Very cool of you! Now I just gotta get done with my work day n get home, finish the wiring n try to crank it up!!

12-09-2009, 11:21 PM	#1
badoon Join Date: Nov 2009 Location: AZ Age: 40 Posts: 49 Trader Rating: (0) Feedback Score: 0 reviews	Confused about ecu and ignition relays I hope this isnt a dumb question, but where do the ECU and Ignition relays plug in? I have a Zenki s14 sr20det in my s13. The wiring is almost done, I just realized I have no clue where to plug em in.There the two square bright blue plugs on the SR harness, None of the info I ve found seems to explain these....

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12-09-2009, 11:43 PM	#2
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	It's easy. The S14 has the relays on the engine harness next to the ECU. The S13 has the relays on the body harness. There are a couples of a way to do it. You can remove the relays from the engine harness and use the ones already on the body. You can give power to the relays and ignore the relays already on the body. Whichever way you want to do is fine. I personally would just clip the relays and throw them out of the engine harness. It keeps your ECU area cleaner. I haven't memorised the S14 SR wiring colours. Otherwise I'd post them up for you. Tell me the wires you need to hook up and I'll tell you where they go on the S13 body harness.

12-10-2009, 12:08 AM	#3
badoon Join Date: Nov 2009 Location: AZ Age: 40 Posts: 49 Trader Rating: (0) Feedback Score: 0 reviews	Ok, ill do that for the relays. I ll know 2mrow after work if ther are any wires I cant figure out. Very cool of you! Now I just gotta get done with my work day n get home, finish the wiring n try to crank it up!!