Hmm. I don't know what to tell you, dude. I don't have to flip my CEL toggle switch to set my timing (JKOBD/RyWire OBDI harness, '91 hatch). I use a 3" piece of scrap engine harness wire with about 3/8-1/2" stripped off each end to jump my timing connector. Works the same as it does on my woman's stock '90 hatch.