Resolved Holley terminator integration into CCRM

[BrandonMP]

Hello everyone, I’m currently working on converting my 96 Mustang GT from stock PCM to a Holley terminator X and I decided I’d be a cool kid and use the Holley 4.6 kit instead of MFKustoms plug and play kit (I like to stress myself apparently) anyways.

I’ve got the engine harness on and everything routed. I’ve depinned and removed the factory engine harness plug and PCM plug and kept fan relay outputs, fuel pump relay outputs/ground, and the 3 connectors that are attached to pcm harness so here’s my issue,

the CCRM has power coming in from the power wires but when I ground the pcm wire sides to activate the relay nothing happens, doesn’t matter if I ground fan high/low or the fuel pump output from the depinned PCM connector wire nothing happens. HOWEVER don’t flame me but if I send power on say the fuel pump relay output wire it will turn every relay in the CCRM on so I’m certain I have the correct wires just not sure why if CCRM has power why it won’t close the relays when I ground.

I hope that all made sense and hopefully someone on here was silly like me and did it the hard way. My next step was just delete the CCRM and make my own relay setup.

Do note I am using a power probe to power/ground directly from the battery

 

[BrandonMP]

I figured it out. All my hots at the ccrm connector had power except R/LG(Pin 13) even with key on as it’s a hot in start/run. (My understanding is this is return signal from pcm to ccrm to tell the ccrm the pcm is on) Ran jumper wire to R/LG at PCM connector side, CCRM activates all relays, ground DB (pin 14, low fan control input) fans turn off. Ground fuel pump wire, fuel pump turns on, ground LG/P low fan turns on. Fixed hopefully this will help someone else in the future