Sure, Randy:
On the dome light first make sure it's set for 12 sec delay position, rather than off, turning it to on should of course do just that. Presumably the delay-off is working on the foot well lights proving that part of timer is working ok.
On the wipers; there is an interval wiper relay (r15 green)plus the timer involved in the intermittent/wash operation. I've had to replace the former, due to dirty contact, although another member simply took apart and cleaned it (using matchbook striking surface). Easy test on relay is to substitute the rear defrost relay (r13 green) and see if that solves your problem. Position of relays shown in owner's manual but they are numbered 13/14/15/16, top to bottom, after you have flipped the interior fuse panel down.
Post again with outcome.
