Battery Drain fix
 

Greetings guys....I'm working on a battery drain on my 80Z, I located the drain on the courtesy/clock circuit. My question, what's the most likely culprit? Dome lights and glove box ight are on circuit.... the dome light works correctly, the glove box light is not operating. The clock does not work, and I believe the lighter is also on the circuit, along with the key buzzer.

What's the easiest way to isolate which component is causing the problem?

Thanks

All those items can be individually disconnected or unplugged. You can pull all off them one at a time and see which one causes the drain. I'd guess that it might not be the individual device though, and rather the wiring to the device. If that's the case there's no easy trick to isolate the wiring to each device. Just need to take them one at a time and try to visually look at each wire where you can.
All the items you mentioned are fed hot, and ground with a switch (or the cigarette lighter) to complete the circuit, so they're hot with the key off. You could rewire the fuse to be a keyed item, if you can't find the wire or device that is the drain.

Thanks..looks like I'll be spending some quality time under the dashboard this weekend!

Real late getting back on this ......but how do I rewire fuse to a keyed item?

I'm not sure what you mean? I don't know how to "rewire a fuse". Or do you mean rewire the wire to a fused load? If you mean rewire to a component, than simply find the wire that feeds it at the closest point to the supply fuse. Then cut it with enough length to work with, and twist on a new wire, then solder it, and heat shrink over the joint. After that you can either follow it out to the component and remove it, or feed the new wire to the component and splice it there also, and abandon the old wire.