Connecting original harness after installing megasquirt

[J240ZTurbo]

Good morning all, I will be installing MS on my 73 240z Turbo swap soon. Question do we still need to install the original 240z wire harness into the coil or not? what do I need to reused? and the relays next to the battery are these still need it?

thanks,

Juan,

Edited October 10, 2010 by juan240z

[J240ZTurbo]

no body?

[cygnusx1]

Too many variables to know how to wire your setup here.  Your best bet is to find a wiring scheme that suits your particular install.

 

http://www.google.com/images?client=opera&rls=en&q=megasquirt+wiring+diagram&oe=utf-8&um=1&ie=UTF-8&source=univ&ei=mq2xTPe9A8L98Abuio2iCQ&sa=X&oi=image_result_group&ct=title&resnum=1&ved=0CCAQsAQwAA

 

 

 

 

 

[J240ZTurbo]

the MS is already done I need help on the original 240z harness if is still needs to be install to the coil thats all?

[J240ZTurbo]

No ones knows? the question is from the original 73 240z old harness do we still need to connect anything from the temperature sensor and from the MEGASQUIRT HARNESS?

[Zmanco]

cygnusx1 called it - you need to tell us how more about your setup. For example, is MS controlling spark? What is driving the coil? Are you using the stock clt sensor or did you add another one? Etc.

 

In general, I would ignore the stock harness and leave it alone to drive the stock gauges. Instead, just pull new wire between each device and the MS harness.

 

Side note: I don't understand why so many people try to reuse the stock harness, especially with the older cars where they are usually unreliable by now. I would argue that it's just as confusing (if not more so) to figure out the harness wiring as it is to just pull new wires.