Looking for a wiring harness for stock ecu, that makes it so all I have to do is hook up a ignition relay for the ecu and fuel pump, and a relay for the starter.

 

Would megasquirt or similar system be a better option?

 

Looking to do a sjr style buggy but with a Waggy Dana 44 front and 14 bolt rear. 63 chevy leafs dual shackle rear, yota rear leafs up front.

I used a stock harness and trimmed most the stuff off it didn't need i left the light, horn, dash , wires,