2a:
If you tripometer works sporadicly, remove your guage cluster and try to problem solve it. You can usually tell whats not making contact. It looks something like this:
If both your tripometer and odometer are working sporadically, check this harness my finger is pointing too for proper contact. Also lubricate the wheels.
Puzzle anyone:
Hopefully MikeD will find this thread and give much more valuable information reguarding this issue.
EDIT: Just found 5a:
Buy a used cluster. You can roll the odometer backwards/forwards (but takes a long ass time)
If you tripometer works sporadicly, remove your guage cluster and try to problem solve it. You can usually tell whats not making contact. It looks something like this:

If both your tripometer and odometer are working sporadically, check this harness my finger is pointing too for proper contact. Also lubricate the wheels.


Puzzle anyone:

Hopefully MikeD will find this thread and give much more valuable information reguarding this issue.
EDIT: Just found 5a:
Buy a used cluster. You can roll the odometer backwards/forwards (but takes a long ass time)