View Full Version : power FC SR harness plug repinning

04-03-2008, 06:16 PM
ok well last year i noticed i had a harness problem on my redtop SR. i bought a blacktop harness from a member here and he supposedly repinned it for a redtop. well i put it in my car, used my redtop ecu and she started right up.

now im doing my build up and bought a power fc for a redtop. i plug it in and the power fc doesnt power up and the car doesn't start. i connect it to my friends redtop powered car and powers up and starts.

my question is what do i need to do with the plug on the harness to get it to work on the redtop power FC? is there anything i can do besides changing it out? i did some wire tucking and dont want to go through that again.

04-03-2008, 09:37 PM
searching online only yielded this result +blacktop&hl=en&ct=clnk&cd=1&gl=us&client=firefox-a
not much but at least it seems like i can make it work somehow. pls somebody help

04-04-2008, 04:10 AM
does this help?

04-04-2008, 07:00 AM
Is the PFC even getting power?

The major difference between teh J4 and E5 ecus is primarily the coil pinouts I believe and TPS or something rather.

What model is your PowerFC?

04-04-2008, 08:38 AM

Download that file. There's two PDFs in there. 1601 and 1602.

These are by AEM that comes with the AEM software.

The 1601 is for E5 and 62 ECUs (common SR harnesses ECU).

The 1602 is for the J4 ecus (later blacktop harnesses).

If your buddy's redtop has a 62 or E5 oem ECU, then your harnesses is probablly rewired for a J4.

Compare the 1601 and 1602 pinouts and you'll notice the differences in some of the pins.

To make it work on your harness, you'll just have to re-pin (or rewire) to match the ECU pins.

This is what I had to do when I bought a PowerFC made for a J4 and I had an E5 harness.

Good luck

04-09-2008, 08:41 PM
ok so here's wat i've figured out so far. when i put on the redtop ecu (62) and test the eccs power (both) and ground with the ignition off they're all ground. the backup power (red) is constant power with ign off or on. with the ign ON with 62 ecu the eccs power (both) turn to positive and are weaker than the backup. the grounds are still grounds.

with the power fc with the ignition OFF the eccs power and the grounds are all grounds and the backup again is constant. with the ignition turned to ON the eccs power still remain ground. i think thats where the problem is. they dont switch to power when the ignition is turned on.

04-10-2008, 08:45 PM
fixed it, yay