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DT69Cam
09-15-2017, 03:46 PM
I have a 69 Camaro and I mounted the GMPP fuse box into the original battery tray location. The ECM is mounted behind it on the pass fender. As a result, my harness is a little short now. Other 69 Camaro owners claim their harness is long enough, that's why I mounted everything this way. Anyone lengthen their harness without problems ?? I really did not want to cut into a new harness.
badazz81z28
09-15-2017, 03:52 PM
Sorry, I have no experiences lengthening the harness, but how short is it? I have that harness with my LS7 and the harness is long, but not that long. I installed mine in a 70. It's all bolted to the firewall
DT69Cam
09-15-2017, 03:57 PM
Sorry, I have no experiences lengthening the harness, but how short is it? I have that harness with my LS7 and the harness is long, but not that long. I installed mine in a 70. It's all bolted to the firewall

I would think a foot longer would be nice. Right now, I can't even mount it to the firewall. Its about 4 inches short to be mounted.
12sec ss
09-15-2017, 05:36 PM
Cut, solder, heatshrink, repeat
130fe
09-15-2017, 06:03 PM
DT, mine is the same way. I mounted the PCM just fwd of the "skinny" part of the fender/inner fender. The fuse panel is mounted just inside the inner fender (behind where the factory battery would be). Routed the harnesses inside of the inner fender. If I had to do it over again, I would just mount the PCM on the inner fender out in the open.
badazz81z28
09-16-2017, 06:56 AM
^^ Do you have pics?
130fe
09-16-2017, 06:26 PM
^^ Do you have pics?

Was that directed at me?
DT69Cam
09-17-2017, 04:03 AM
DT, mine is the same way. I mounted the PCM just fwd of the "skinny" part of the fender/inner fender. The fuse panel is mounted just inside the inner fender (behind where the factory battery would be). Routed the harnesses inside of the inner fender. If I had to do it over again, I would just mount the PCM on the inner fender out in the open.

Thanks Chris for the reply. I would of never routed it that way if I knew I was going to come up short. I was given misinformation on another site. I think I will just mount it on the inner fender as you mentioned and call it a day.
badazz81z28
09-17-2017, 06:15 AM
Was that directed at me?

Yessy