i currently put a motec on my 00 civic well im using a 97 civic wiring harness and of course im using the factory computer to run my speedo and other few accessories well since the factory ecu doesnt see a tach signal it wont let the compressor kick on so i need to know how to bypass the ecu directly to the a/c switch to cut the compressor on and off please help here is a sneak of my car but please help me on the question
please no questions on the car unless u pm me ONLY

 

please help me its so hot in louisiana and i need to see a diagram or something to show how to by pass that relay

 

omg that looks s0o sexy. i'll help you look.

 

thanks man just got it back from the dyno but i cant get my a/c comp to kick on because the stock computer doesnt see any rpm signal so you have to bypass the relay going to the ecu directly to the a/c switch i will pay u threw paypal for all the help

 

You can use the Blue wire from teh dizzy for your tach signal. Try to hard wire it to the ECU (stock).

 

what wire on the 96-98 harness into the ecu side is the tach signal wire

 

please help

 

what is the ECU you are using. I will try to get a diagram for it tommorrow.

 

im using a p72 ecu and a 97 civic auto trans wiring hatrness

 

but i need the diagram for the a/c too for the relay and all

 

OBD? you using the 97 harness?

 

its a 00 civic car and the ecu is a obd2
i need the diagram for the car side a/c and the ecu side a/c thanks so much

 

up please