[Bill Hanlon]

It is very unlikely that a bulb would develop a short. At least not for long. So removing all the bulbs and trying again is likely fruitless.

But the more I think about it, maybe a bulb is sitting wrong in its socket and shorting the contact to the case which is ground. It shouldn't take long to try. Pull all the bulbs, put in a new fuse and see if the fuse blows. If it blows you have a wiring problem between the fuse and the switches.

If the fuse holds turn on the dome light switch.
.................If the fuse still holds install the dome lamp.
,,,,,,,,,,,,,,,,,,,,,,,,,,If the lamp lights consider yourself lucky.

Now do the same thing with the trunk lamp.


The reason I thought that was the wrong switch is the way the switch is drawn on the wiring diagram. There it looks identical to the brake light switch that GM used in their Chevy and GMC trucks.