Quote:
Originally Posted by Diverdude0075
We all love pics! Dave, the pin out shows two yellow wires coming from the tcm harness that get key on power. I’m not seeing those yellow wires.
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you're killing me smalls
I may have to take my dash cover back off for you two knuckleheads lol
I'm going by memory now, and it wasn't easy to do the first time let alone remember it now
but here goes
the first Allison Pinout is the one you need to worry about mostly and the wires I dealt with are right there on that.
The green 125 is what lights up your Check Trans light... i traced that one out of the back of my dash, and I THINK it was 94A... it was some trial and error. But basically you need to get the green 125 to light up that check trans light and either stay on (if faults) or goes on and self test, then goes out.
The other pink 113 is going to a regular incandescent bulb... in my case it came with my harness... but it is just a standard 12v light. This is the RANGE INHIBIT and it will also do a KOST (Key on self test). Its job is the transmission telling you "Nae I will not shift now" good example, trying to shift into reverse if your rolling to fast forward it will light up. your dash MAY have a range inhibit light in the cluster of newer dash... mine did not and so is just a regular light, looks like the NOS light in furious movies... big yellow one. So a logical guess would be to run the Pink 113 to a light bulb, and from bulb other terminal to ground... don't use LED (at first) as it may look for the resistance of a bulb... dunno
Yellow 102 and Yellow 104 are KEY ON 12V...
Pink 113 is vehicle system, and is also a 12v key on basically.. I have no idea what it is checking for, but I slaved it to my KEY circuit for the ABS and that sorted it... no idea what system it is SUPPOSED to go to, but it is looking for a 12v+ key on, off when off
Chris can better chime in, but what you are sorting now is all in the TCM J1 connector, the gray one.
otherwise it can get tricky from here.. if memory serves Diverdude has a large chunk of harness coming FROM the TCM and no where to put it with a lot of wires left? Or only a couple?
See on the TCM there are a LOT of other connections may not be used, and again Chris can better help. But I believe my bus gives speed and TPS position over the J139, so the speed and TPS sensor inputs on the TCM plug are prob unused?
again, not sure... I had the ENTIRE harness..
hope this helps.. I am GLAD to keep plugging along with ya'll