I have a 90 Crx hf. The wiring cought on fire a while ago. I got a wiring harness from 91 Crx Si. The guy that i got it from said it was all hacked into. Come to find out that alot of wires r cut,soddered, and heat shrinked. There's wire by the ECU that need to get put together. Also there one area that i'm having trouble with. There's a relay behind the paaenger headlight that has 5 pin plug. 1 black wire is connected, 1 yellow with green stripe is connected, 1 solid blue not connected, and 2 black with yellow stripe not connected. I need to know what this relay is used for and where these 3 wires go to. After finding this my car would be close to getting back on the road. I attached a pic for referance. Any and all help is greatful.

 

that is the radiator fan relay. I am 100% sure on that. I am not sure what the 5th mystery wire is.. as it should have only 4 wires..

yellow/green is ground to the coolant temp switch and also to the ecu downstream of some diodes, solid black is ground to chassis, Black/yellow is 15a fused power spliced from the radiator fan hot line, and blue is radiator fan ground.

 

and as far as using the si harness in your hf. you're going to have to switch more stuff around now :/

http://media.photobucket.com/image/s...harness2-2.jpg

 

Thanks for the useful info. Will b doin that pin relocation tomorrow. My next issue that im having is one of the wires for the bigger of the 3 plugs, I have no clue on where it goes. Its a soild black with a red strip wire. I've included a pic for referance to see. This is the bottom of the plug as seen. Once again thanks for the help

 

where is that plug from.. like what area of the car?

 

my bad... Ecu plug

 

That wire should be a ground, going to the ground on the thermostat housing.