advice on wiring

Gentleman Rogue · Post by **Gentleman Rogue** » Wed Jul 22, 2009 5:41 pm

ive read through the main page about breaking down the DSM wiring harness, but theres a couple things the writeup didnt cover that i was wondering about. before anything else, the truck is an '88 Ram 50(carb'd 2L) swapping to 4G63 and wiring harness from a '90 GS.

first off- the ECU and DSM harness look pretty self sufficient, so i was wondering what i really need to splice together with the truck's wiring. do i just hook both the DSM harness' fuse block terminal to the battery along with the truck's terminal? or do i have to splice them together somehow to just have the one connection? i figured if the ignition switch is constant hot, i could power both the ECU and the main relay off that, but was wondering what other people have done.

also, when terminating wires, should i try to pull out as much of the wire out of the harness as possible, or should i just cut it close to where its at and tape it up there?

i've been trolling through the topics here in the "swap electrical forum, but if anyone can remember a specific topic or author that had a particularly helpful thread that would help me- i'm more than willing to do some digging for it.

thanks in advance guys!

citrus3000psi · Post by **citrus3000psi** » Thu Jul 23, 2009 3:00 pm

I feel your pain on lack of wiring write ups. I wanted to keep my setup as oem and removeable as possible.

I found a donor ram 50 at the junk and ripped it fusebox out. I ripped the pins out so I could add more fuses into my current fusebox. I ran the fuel pump, ecu, etc to these. There were also many wires that I didn't use in the dsm harness. I unwrapped my entire harness, removed the wires and wrapped it all back up. It took some time but my harness couldn't look anymore oem. I did have to extened the faic connector on the harness.

I even took the truck ecu out of its case and put my eclipse ecu in this. My eclipse ecu now mounts in the stock location without problems.

Gentleman Rogue · Post by **Gentleman Rogue** » Tue Jul 28, 2009 9:04 pm

so you're powering the ECU through the fuseblock? did you just splice into the wires from the ignition switch to power the main relay? did you use a "pigtail" connectors from the DSM harness spliced into the plugs for the truck's ECU, or what? basically curious about what you did with plugs C58, C59 and C67.