Pappy

Gremlin found:

Reverse lights only function when lights are on. Does not function w/o lights on.

Have not pulled the relay (mostly because I wasn't sure the proper way to pull it out), but the other fuse(s) are good.

This functionality does not sit well with inspection in the Philly region.

87 a/t

Leon Speed

So with lights on or with lights on and in reverse? If the former than it might be an easy wire mixup at the rear lights. If the latter than it might be harder to find (dash or CE panel).

Pappy

Can shift into reverse all day with no reverse lights. If I turn on lights and then shift into reverse (or already have it in reverse while turning lights on) they work perfectly.

There was an aftermarket amp or something installed as there is a lead running from the battery to the front along the drivers side.

Hope to get some time Friday to take another look at the wiring.

WallyP

The power for the backup lamps on your car should go from the 15 bus (ignition-switched power) to Fuse #12, and from there to Terminal 30 of Relay XXII, the Backup Lamp Relay.

It appears that either Terminal 30 or Fuse #12 has been switched from Bus 15 to the lighting circuit.

I would start by determining whether Fuse #12 is powered from the ignition switch or from the light switch. The easiest way to do that is to use a test light (or a multimeter) to check for voltage on the tiny metal bits on the face of the fuse. If there is power with the ignition switch on, the fuse is wired correctly. If there is power only when the lights are on, the fuse is wired incorrectly.

If the fuse is wired correctly, the problem is the connection to Terminal 30 in the relay socket.

Leon Speed

The Master has spoken!