Hello, I have a question about a my obd2 to obd1 jumper harness. I got to looking around at it and noticed it has a resistor soldered in between pinout 21 ICM1 and pinout 25 IGP1. For what reason would the previous owner have done this? The car is a 2001 Gsr with obd1 ecu. Here is a Picture

 

hmm. would that be an ELD?

 

I don't think that's the proper way to do that, but I believe it's to fix a tachometer issue that can happen with OBD2B conversions. I would advise removing that and insulating the wires. It looks like the resistor is charred to hell anyway.

 

That's the bypass for the immobilizer I think so there should not be a constant check engine light as 2000 to 2001 came with immobilizer

 

It is definitely for the tach issue sometimes found on OBD2b Integras. You get what you pay for; that looks like crap. Depin it, remove the resistor and shrink those wires up.

 

ok guys thanks for everything I just got back to read all the info! im going with hondatta s300 when i get the money

 

if i do remove it will I have any issues? It was like this when i bought the car.

 

the immobilizer on obd2b is inside the ecu.
you shouldn't have any issues as long as you insulate the wires.