Can anyone help with wiring RB20? I found some informtion on the RB harness but not for the or the 240sx. My tach is not reading correctly and speedo is not hooked up.
Also has anyone verified the wiring on the J30 AC system in the S14?

The tach can be "made" to work by adding a resistor to the wiring I've done that in the past it does work.

Im not sure on the speedometer I always used my phone. Might be simple as putting the 240 speed sensor in the rb tranny?

Ill dig if you need to know.

I think the tach and spedo come in from the F4 plug. Make sure that is wired into your harness.

Thanks guys,n
I have been so busy with work I have not been able to do any work on the car, and looks like Im gonna be another week at least. Anyone have a pinout for 97-98 240? or which wire is the speedo?

Also if anyone is wondering. The AC lines out of the 97 J30 do work very well. The compressor bolts up to the RB bracket. The only mod I think im going to have to make is to shorten the line coming from the dryer, and on the High side, the slip nut is 1mm to small.

Anyone have any ideas on how to wire it up?