[89IROC&RS]

hmmm.... well the turn signals, might be a bad ground, the flashers are essentially a circuit breaker, current goes through, heats em, they kick off, then reset. if the ground is bad, not enough power is going through the flasher to heat it up, so it never turns off. look for some sort of corrosion or loose ground to cause that problem.

retained accessory power module??? as in the vacume tank??? or something else?

for the tranny, does it go PAST reverse like into drive and such??? or will it not come out of park at all???