View Full Version : issues w/ 5th gen brain and wiring

04-26-2006, 12:05 AM
I've got a 1990 ST185 (VIN 00000539), swapping in a JDM motor from a later model ST185 (VIN 00009525) with an electric Speedo and single wire O2 sensor (my USDM car originally had mechanical speedo and 4 wire O2 sensor). Will I have any problems using the newer wiring harness (JDM harness, JDM engine, JDM computer, USDM mechanical speedometer) Will I have any issues with any Check Engine Light and will everything work like it should? I don't want to get most of the way done with this thing and the brain throwing a code, saying that it's not reading how fast the car is going or something.