Last night I installed a battery in the truck, so that I could check out the lights. Most of the exterior lights are working. Except that I could not get the reverse lights or license plate light to burn. Especially now that I know the sidemarkers are just reflectors, NOT lights. D'oh!
The cab and cluster lights don't seem to be working. The high beam indicator was working for a while, but he gave into peer pressure and quit, after about 10 minutes.
I also got the retractor end of the passenger seat belt removed. But the bolt holding the driver's belt won the fight. I'll have to mess with it another time.