Keyxj

Just recently did the Bosch 4 hole injector upgrade...
The originals were working OK, but I occasionally got a misfire at freeway speeds, but that may have been old gas tho.
Anyway, I did the swap, and the idle is much smoother, for starters.
Only issue I had was that the injector harness plugs are starting to crumble.
Mose of the red lock pins were disintegrating, and no they wont lock down on the injector.
I wonder if its possible to replace the harness... or solder in new plugs... or even just de-pin the connectors and insert into new plugs?
Whats my best option?.

Keyxj

Anyone?

5-Speed

You can get new connectors. They are either EV1 or EV6 style plugs. I cant remember off the top of my head. If you have a pair of wire crimpers, I would just cut the old ones off and go new everything. Its a simple job.

David Bandy

I just redid my connectors today. I got 6 new ones at autozone. Duralast 712. About 25.00 each. Wow do the Bosch 12 ports I put in it have so much better power now. Jeep drives like a bat out of hell. I used Dorman professional builder 22-18 gauge butt connectors they come with heat shrink tube
You will need a heat gun. The existing wires are 20 gauge and the new fuel injector wiring connectors are 18 gauge. I also used scotch super 88 tape and zip ties. The green and red striped wires are your 14v power wires. The other wire coming off each injector is a pulse modulated ground wire. It is modulated by the computer. Also you’ll need a pair of crimpers that have a crimp for 18-22 gauge. You’ll find a lot of the wires in the harness behind the fuel rail are melted together slightly. Try to get them all separated.