I recently purchased a rywire budget harness for my ek, it has 3 wires for an alternator plug that has been cut off, the issue im having is i need to wire in a 4 wire square plug to work with my alternator, Also the ecu plugs are obd1, but im having trouble figuring out which wire goes where. The harness itself has all black wiring so i can't even determine which wires goes where. I would greatly appreciate the help or if you can point me in the right direction.

I need help in converting a 3 wire alt plug to 4 wire, but need the pin outs for obd1 ecu plugs.

Thanks.

 

you bought the wrong harness

 

You must post detailed car information (year, trim, mods).

 

sorry it was late, i have a 1996 honda civic cx hatchback, harness is for 96-98 hatchback with obd1 plugs. The engine is an 1997 acura gsr engine.

 

why did you buy it with an obd1 plugs if your engine is from an obd2 car?

 

the previous person that bought the harness had them make it this way, but back to the point can somebody point me in the right direction for the pin outs and wire color for 3 wire alt plug?

 

Wow, more information that wasn't provided.

https://honda-tech.com/honda-civic-d...-plug-2722254/

Wasn't hard to find.

 

thanks, but that's not what i was looking for. let me try to re explain what im trying to figure out.

the harness has a 3 wire alt plug my alternator takes a 4 wire square plug.

I'm assuming that the 3 wires on the alt plug that got cut off is for Alt FR signal, Alt switch, and IG.

heres the tricky part i know from searching on honda-tech that i can bypass the edl wire on the 4 wire plug and only need three, and i know D9 is alt switch A16 is alt control, but for the IG wire yel/black can that be spliced into A25 (obd1) or b1 at the ecu plugs.

 

Isn't your question answered in the post below in the thread link Tony posted?

https://honda-tech.com/honda-civic-d.../#post41465807