Hey guys. Restoring a 1989 B2600i 4x4 for my girlfriend and its almost done. Runs great but Check Engine light is on. When I run the codes it blinks 3 times pretty rapidly (.5 seconds) and just repeats the cycle. Am I correct in thinking it’s distributor related? No G signal is what I’m coming up with but not too sure. Being in California where any engine code is pretty much a serious smog issue that will literally bankrupt anyone I’m seeking advice. Thanks!