OK guys I have a 99 b16 motor in an 96 ek coupe. This car is a full race car will never be on a street only the track. Question is I have the 96 ex engine wire harness and an obd1 ecu with jumper harness. I don't have any other wires in the car ( no gauge cluster or dash harness or floor harness) I want to run the motor with a switch panel. 1 for ignition a push button start and 1 for fuel pump and other 1 for radiator fans.. I know I need relays for the switches but how do I wire them all into the car.

 

Anyone got any ideas ?

 

Run power to the relays #30

Run trigger wire from switch to relay #86

Ground #85 on relays

#87 is power out to fuel pump,starter,Ecu.

There's 3 wires on the engine harness that tie together yellow/black and two black/yellow wires.

The switches will all so need a power to one side.

This all depends on what type of relays and switch panel you use. This is the most common way of wiring it.

 

OK yeah I know how to do the relays they are basic 5 pin 12v 30/40 a relays...just using toggle switches for the fuel pump and radiator fans and ignition...battery will be on a shut off switch and starter will use a push button. Just didn't know how what needed to be hooked to engine harness for it to run or if just plug in it into the ecu is fine...like the end of the harness the would plug into the chassis harness by driver door. Do I need to connect anything to that ?

 

Bump

 

The 10 wires plug on the drivers side from the engine harness has all the wires you need to get the motor to run.

Big black/yellow wire

Small black/yellow wire. All 3 of these wires tie together

Small yellow,black wire

The big black/white is the trigger for starter.

 

What three wire do i tie togeether. So just twist them together and solder them to become on big wire...then when I flip switch for ignition it will send 12v to all 3 wires?

 

You tie the two black/yellow wires and yellow/black wire together making them one.

 

So then that's all the will go to my ignition switch

 

Yes sir. Make sure the ignition switch is fused.

 

What size fuse should I run for the ignition, fuel, and fans ?