my friend is trying to replace the under dash wire harness , the one that go from the ecu all the way to the other side of the car , to the fuse box , relay and all that ****
i just want to know how hard is it to replace , i can see in the manual it has about 20 diferent connector , that go to the fuse box , ignition , bla blah blah

thanks
btw its a obd1 civic dx coupe

 

anyone?

 

i did it on my old eg. not hard if you have the wiring diagrams

 

I have the manual , I gess i'll give it a try