ek9 c131 green connector

[Vrmmmpshhh]

hi does anyone have the wiring diagram for the c131 connector on the ek9 loom. its the green one that goes up into the dash. been searching for days and i can only find the connections for the ecu side. The green plug is wired very different between obd2a and obd2b.

 

[Vrmmmpshhh]

forgot to mention its for a 99 model obd2b.

 

[Vrmmmpshhh]

does anyone know what the connectors are or a link to the wiring diagrams for the odb2b cars???

I am transplanting a obd2b engine into a obd2a car using the original obd2b wiring loom. i dont know if anyone has attempted this but im about halfway through repinning the wires but stuck on the green connector. when its done i will have enough info to do a DIY for anyone else attempting this.

 

[Vrmmmpshhh]

i will be updating this thread with things i find out during the process.

obd2b c131 connector #7 is for fans but everywhere i look online connector A20 is supposedly fan. when i short out the ECT switch, c131 #7 starts the fans whereas A20 does not.

 

[Vrmmmpshhh]

The dark blue wire (rpm signal) coming out of the distributor does not plug into anything on the engine harness. To get the tacho to work, wire this blue wire into the blue tachometer test wire (which runs up into the gauges) which is up next to the brake booster. Will update on the speedo, got it working last night, without the speedo vtec will not kick in.