I just installed a t3 turbo with dsm 450 injectors. I switched from my obd2a ecu to an obd1 and tuned it with uberdata. as soon as I installed the obd1 ecu my driver side headlight is dimmer than normal. And at night while driving with the lights on, when I use my left turn signal, the windshield wipers come on. This is only with the lights on, with the lights off the wipers don't do this. Was wondering if anyone has experienced this when switching from obd2 to obd1 and what the problem could be. It doesn't bother me too much now but would like to fix this in the future.

 

honestly switching from obd2 to obd1 should have NOTHING to do with ur cars chassis wiring.. Maybe it was coincidence that it happened the same time u did the conversion