Cummins93 Posted October 15, 2020 Share Posted October 15, 2020 Here is my current understanding of the early controller types. Pre 87 had a single ecu connector? The 4.0 XJ and MJ had the 32 and 24 way female harness connectors for the renix ecu from 1987 to 1990? I can source the harness connectors but the ecu 56 way is rather difficult to find. Does anyone have a bad renix ecu and/or harness? Link to comment Share on other sites More sharing options...
Oizarod115 Posted October 15, 2020 Share Posted October 15, 2020 I had good luck getting a complete harness from a junkyard on the internet, 120$ shipped, installed and the truck runs/works normally. Looked like ECUs were expensive though, hopefully someone has one. i used car-part.com to find the harness Link to comment Share on other sites More sharing options...
87MJTIM Posted October 15, 2020 Share Posted October 15, 2020 What are you looking for? ECU and/or wiring harness? I have a couple ECU: 87 ECU auto and 89/90 ECU auto. (I have manual ECU, but not for sale.) Link to comment Share on other sites More sharing options...
Cummins93 Posted October 15, 2020 Author Share Posted October 15, 2020 I would like to reproduce the connectors and make a pnp harness for the speeduino. I currently have them for the JTEC. Link to comment Share on other sites More sharing options...
cruiser54 Posted October 16, 2020 Share Posted October 16, 2020 87 to 90 are are the same. I MIGHT have one. Link to comment Share on other sites More sharing options...
Cummins93 Posted October 16, 2020 Author Share Posted October 16, 2020 What do you have? It can be in terrible condition as long as the connectors are intact. I have some test pieces coming by the end of the day. If I can confirm they line up then I may have a working solution. Link to comment Share on other sites More sharing options...
cruiser54 Posted October 16, 2020 Share Posted October 16, 2020 I'll go look today. Link to comment Share on other sites More sharing options...
cruiser54 Posted October 16, 2020 Share Posted October 16, 2020 I have ECUs but no plugs for them. A close-up pic of the ECU? Link to comment Share on other sites More sharing options...
Cummins93 Posted October 16, 2020 Author Share Posted October 16, 2020 Can you post pics of the ecu plugs? Emphasis on the key ways and rough dimensions if you can. A simple dial caliper will be accurate enough. Link to comment Share on other sites More sharing options...
cruiser54 Posted October 17, 2020 Share Posted October 17, 2020 Link to comment Share on other sites More sharing options...
Cummins93 Posted October 17, 2020 Author Share Posted October 17, 2020 Thanks. Yea those keyways look much different than what I have on the diagram. Link to comment Share on other sites More sharing options...
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