Ok I'm in the middle of doing the 4.2l to 4.0l swap in. 90yj the motor came out of an 95yj I'm using the original tranny out of the 90 so the problem I'm having is the plug on the sensor that's going into the engine harness from the tranny is different the old one is a block 4 prong and the new is a half oval 6 to 8 prong so my question....
Is there an adapter I need or do I just change that whole harness out at the tranny?
Mind you guys I changed all the electrical component to 95 everything
We are also having trouble finding then conversion from the mechanical speedo to the digital any help on the would b great as well thanks