Hello, well I have the engine pulled from my 87 MJ and I was going to replace the C101 connector. Sorry if this has been covered before but I couldn't find anything on the subject.

The only writeup I found just cut the connector out and put the corrosponding wires together. I like this Idea but didn't want to cut my harnesses.

So I was wondering what would I need to do to put the later style wiring harness in? what parts would I need? or would it be better to just clean the C101?


Another question I couldn't find info on. My MJ didn't have AC from the factory. Can I add in AC? or would it be better to just add in OBA?


Sorry If these have been asked before. I couldn't find them.

Thanks.

 

Renix Jeep C101 Connector Refreshing
　

The C101 connector on 1987 and 1988 Renix Jeeps was a source of electrical resistance when the vehicles were new. So much so that the factory eliminated this connector in the 1989 and 1990 models. The factory recommended cleaning this connector to insure the proper voltage and ground signals between the ECU and the fuel injection sensors. We can only imagine how this connector has become a larger source of voltage loss and increased resistance over a period of almost 25 years. The C101 connector needs to be cleaned at least once in the lifetime of your vehicle. Chances are it’s never been done before.



Almost every critical signal between the engine sensors, injectors, ECU, and some to the TCU, travel this path through the C101 connector.

The C101 connector is located on the driver’s side firewall above and behind the brake booster. It is held together with a single bolt in it’s center. To get the connectors apart, simply remove the ¼" bolt and pull the halves apart. You will find the connector is packed with a black tar like substance which has hardened over time.

Take a pocket screwdriver or the like and scrape out all the tar crap you can. Follow up by spraying out both connector halves with brake cleaner and then swabbing out the remainder of the tar. Repeat this procedure until the tar is totally removed. This may require 3 or more repetitions. Wipe out the connectors after spraying with a soft cloth.

If you have a small pick or dental tool, tweak the female connectors on the one side so they grab the pins on the opposite side a bit tighter before bolting both halves back together.

　

Revised 03-02-2013

 

Thank you crusier. I have read that before, but do you think It would be better to just leave the C101 and clean it as you said, or change it to the newer style since*I have the engine out anyways?

 

Your choice. Cleaning it seems to work just fine.