i started on modding my own last night by tracing out all the transmission, ac, intake air heater, and some of the other bs that i dont need out of my truck side harness. anyone else decide to try their own instead of getting raped by ppe?
Stand Alone Harness 3.0 ODL
- Thread starter duramaxsandwich
- Start date
it does not seem to be too complicated i have the 5 volume gm manual for my 01 so it has all the pin outs of all the connectors in the truck which makes it easier. only thing i really need to find out is what i need to keep from inside the cab. i know i'll need to keep the obd2 and the throttle position sensor. i need to do more research and figure out what i need for the ignition.
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We got a small shop working on extending part of our harness for us right now. They do some work for GM and I figured they could handle ours as well.:thumb:
There is one available here.
http://www.dieselplace.com/forum/showthread.php?t=411010
thanks, it does not seem to be too bad, if a person is familiar with these trucks i think it can be a fairly simple diy job.
i'd like to get a diy standalone engine harness thread going. there are quite a few guys going to ODL this year in my neck of the woods so i thought this might be helpful.
We are currently doing a similar project to what Rob did on his puller - moving as much as possible into the cab. We are trying to cut as little as possible though too. I'll post results when we are done.
I modded my own harness with the help from the 5 GM manuals for an LLY... Without the high speed can of the 06 and newers it it pretty simple. Season was getting close last year and the truck was almost done, so I took a day off work and got it the harness done and installed in less than a day...
I just got a ZF6 LLY tune to put in the ODL truck, put the throttle on a handle and extended those wires, extended the OBD2 wires into the cab, mounted the ECU to the firewall, wired all the (mostly) pink and orange wires to power or ignition fuses like the manual labels them and started it up and it just kept dying...
I didn't use a key switch, just a push button and toggle switch... Finally found that I did not have the theft deterent disabled in the tune!!!
I just got a ZF6 LLY tune to put in the ODL truck, put the throttle on a handle and extended those wires, extended the OBD2 wires into the cab, mounted the ECU to the firewall, wired all the (mostly) pink and orange wires to power or ignition fuses like the manual labels them and started it up and it just kept dying...
I didn't use a key switch, just a push button and toggle switch... Finally found that I did not have the theft deterent disabled in the tune!!!
i was thinking about mounting the ecm in the cab and just using the bail connectors at the firewall to detach the engine harness from the truck harness. i thought it might make it easier to pull the motor if i needed to in a hurry. i think if i had a motor to test mine on i could have it done this weekend.
thanks for the tips tho
Same thought here. Get as much out of the engine bay as possible for when you go to work on it.
Can you guys tell me what all i need to keep just to make my ODL truck run. I no longer need tcm so that is gone no steering column only a push button and switch also the dash and instrument panel are gone. It will be a hand throttle but from the looks of my gm manuals that is wired to the ecm so that looks pretty simple. What about wiring the obdII port. Do i need any of the wiring from under the dash like for the BCM All my gauges will be manual other the the tach is that wired into the ecm also? What all do i need to mod on the engine harness. All these wires freak me out some. This is a lb7
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jim we should have my wiring finished up this week and should have the truck ready to run this weekend hopefully if all my lines and parts show up. i went through the harness and traced everything back from the tcm and deleted all that. the connector from the bottom of the fuse block is the one with all the pink and orange wires go into. the two orange wires power the ecm, we put power to all the pink ign 1 wires. there is also a grey and black wire that is the ficm relay. (this is the one we used as the kill switch) the tach lead is a white wire from the small 12 pin connector that has all the leads that went to the guage cluster. (i have my tach wired as a 4cyl 1 pulse iirc) we'll see if it works. for the obd 2 port there was like 5 wires. there was a ground, a 12v power, a serial data 2 and an entertainment circuit. we hooked up the ground, 12v power, and ran the dark green serial data 2 wire from the ecm into the obd2's purple wire. i have all the manuals with the pin outs. this is what we came up with so far with a little help from some friends.
after we get the truck running and chase out any bugs i'll have more info for ya.
All this sounds about right, I removed all the excess crap from Paul Megrath's harness.... I can access all the wiring diagrams also, if you have any roadblocks feel free to give me a call. I now have some time on my hands and will be taking a couple weeks off, we lost oil pressure after our last hook on Saturday and I am not going to tear it down for a couple weeks.....
I am not sure, but I think the gear for the oil pump might have came loose.... I do not know if others have had a similar problem ever.?.?
