mjeff87 Posted March 1, 2008 Share Posted March 1, 2008 Pulled a wiring harness off an 88 4.0/AW4 MJ in the ‘yard today, and have a couple of connectors I need to identify. The MJ had been picked over a bit before I got there and some stuff was missing….I’ve got everything figured out except three connectors to the manifold/TB area, and two connectors under the manifold, in the same loom as the knock sensor. First, the three on top of the manifold. One is a 4-wire connector: Blue/yellow tracer Green/black tracer Purple/black tracer Red/yellow tracer One is a 3-wire flat connector: Yellow/green tracer Brown/white tracer Red/yellow tracer And one is a 3-wire square connector: Light gray/black tracer Red/no tracer Tan/pink tracer Image Not Found The others are below the manifold, in the same loom as the knock sensor: 2-wire connector: Tan Brown/white tracer 3-wire connector (is this the O2 sensor connector?): Orange Gray Black Image Not Found BTW....here's the whole mess. Took me about 2 hours to pull it all (once I figured out how to get it seperated and pulled thru the front clip :D Got the whole harness, radiator support, fan shroud, ECU, throttle cable and linkage for $50...... Image Not Found Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted March 1, 2008 Share Posted March 1, 2008 Jeff the top picture looks like the two TPS connectors and the IAC motor/sensor IAC is on the left by fuel injector thingys. Two on the right are for the TPS. Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted March 1, 2008 Share Posted March 1, 2008 Under the manifold The three wire sensor is O2. I believe the two wire sensor is your Coolant temp sensor. Let me know if ya need pics. Link to comment Share on other sites More sharing options...
HOrnbrod Posted March 1, 2008 Share Posted March 1, 2008 Hey Jeff, if you don't have one already, now is the time to invest in an electrical FSM for your rig. It has pics of all the harnesses with all the connectors labeled. Will be the best $$ you ever spent mate. :cheers: Link to comment Share on other sites More sharing options...
mjeff87 Posted March 2, 2008 Author Share Posted March 2, 2008 Thanks guys.....top ones are verified as IAC and TPS (I only need the one becuase of a manual trans). Bottom one still in question is either MAT or coolant temp (thinking it's the MAT, but then I don't know where the coolant temp is now...gonna have to run back down and look at donor vehicle again in the morning to verify) I do see an FSM in my future, very soon! "Dis is gonna be fun" :D Jeff Link to comment Share on other sites More sharing options...
jtdesigns Posted March 2, 2008 Share Posted March 2, 2008 I'm pretty sure the one that looks like an injector plug goes to the knock sensor.. Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted March 2, 2008 Share Posted March 2, 2008 Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted March 2, 2008 Share Posted March 2, 2008 It's definately CTS. The MAT sensor harness is up by the injectors. Link to comment Share on other sites More sharing options...
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