1978 corvette Courtesy light fuse problem

As you can tell from my signiture, I'm NOT a Corvette guy, so please bear with me.
I'm working on a '78 Vette, and while doing some electrical work under the dash I kept blowing the "Courtesy Lights" fuse. So, I resorted to putting a 20Amp Circuit Breaker in the "Courtesy Lights" fuse position (2nd one down on the Left Side) The circuit breaker immediately gets very hot. (I don't think I have a short, as I knew each time I blew the fuse, I was aware of the cause. and other than that, the fuse was carrying the load) Does anyone on here have a listing of what all this fuse serves? Or can you send me to a link that would show that circuit? Do circuit breakers normally get this hot?

The breaker in use is about 1/4" square, black plastic with round copper lugs that fit into the fuse position. (I think it is made by Dorman)

This car is being raffled off for charity in 3 weeks (July 21,'12) so money is non-existant for buying anything, and time is pretty much in the same catagory. :runaround: Thanks!

Usually the cigarette liters, trunk and/or hood lites and all the courtesy lites.

The problem is solved! I went 'back to the basics', and put a regular 20A fuse in the offending slot. No more problems, and all the lights work! Apparently I just got a defective breaker, as I had the doors open for about 5 hours yesterday, with all the lights on the whole time. Thanks for the input, Maxwedge

Light switch 15 amp fuse circuit brake and check the tail. If you have 55 corvette you have 6 volt electric fuse system, so go for 20 amp which is regular.

What year did the 'vette go to a 12v system?

JoeW & Jeff collision, All GM (and I think Ford & Mopar) went to 12 Volt systems in 1955. The '53-'54 vettes (and the other brands older vehicle models) were 6 Volt systems. I've solved the problem, and, as listed in the first entry, the car has been given away.

NOTE TO MODERATOR: Please close this thread, as we are getting away from the origional question. Thanks Stale Trooper