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-   -   Microtech quick harness question on lt8s (https://www.rx7club.com/microtech-111/quick-harness-question-lt8s-908518/)

need-a-t2 06-13-10 05:59 PM

quick harness question on lt8s
 
hey guys. i just bought a used lt8s from a forum member here and it looks like he pulled the power wire right out of the coneector on the harness. so my questions are:
1) what AWG is the power wire

2) does anyone know what kind of pin style is used in the connector? looks like i need to buy one from mouser or digikey...

Aaron Cake 06-14-10 08:58 AM

The stock power wire is a quality 14 AWG, which has about as much wire as a poor quality 12 AWG.

The pins are the same as used on ATX computer power supplies, whatever size that may be. :)

Keep in mind that the power wire splits to also power the injectors so you will need some 16 AWG and heat shrink tubing.

need-a-t2 06-14-10 12:40 PM

good info, thanks!

and the rest of the wires appear to be 18 AWG...that correct?

Aaron Cake 06-15-10 10:01 AM

18 AWG from memory. All the signal wires are fine at 18 AWG. But use 16 for injectors.

need-a-t2 06-17-10 03:55 PM

will do, thanks!

need-a-t2 07-23-10 12:39 PM

1 Attachment(s)
ok...i feel a bit newbish for having to ask, but better safe than sorry. the power wire that was pulled out was not the +12V battery wire, it's the "power" wire. Waht exactly is this wire for and where is it suppose to get connected?

need-a-t2 07-25-10 11:37 AM

no one? buler...buler....

Aaron Cake 07-26-10 01:32 PM

That wire gets a constant 12V source from the battery and is what powers the ECU.

need-a-t2 07-26-10 04:39 PM

but isn't that what the BATT wire is for? so they both get connected to a constant 12v?as I have it right now I just have the BATT wire connected to a constant 12V and the ECU powers up without any errors...?

Aaron Cake 07-27-10 08:30 AM

I'm sorry, that was an MT-8 diagram I saw...

OK, batt goes to the battery. Power goes to IGN 12V.

need-a-t2 07-27-10 10:42 AM

yeah, any time i download the LT8 wire diagram i get the MT8 diagram.

so "power" and "IGN +12V" get a switch 12V? that doesn't seem right to me...


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