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1992 Buick Roadmaster has an electrical short. There are two silver thermal fuses maked A & B. A goes to seat and door locks. This fuse got hot to the touch. We replaced the battery and what I need to know-How to fix or locate the short. Do I have to tear apart the dash? We have a very good electrical fix it garage-should it go there? It is expensive...
Thank you for any and all input
 
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If that fuse got hot it doesn't really mean a short is present.Normally if wire of fuse gets hot it's something drawing too much current or load, but it could be a short too.If you check a fuse and it's black inside that usually indicates a dead short some place.
What you need to do is look for frayed , melted or discoloured wires and also find the ground to the seat and door locks and try to replace it with a whole new ground, plus try testing a seat by itself with your own positive and negative feed off the battery with a in-line fuse in the wiring going to the positive post.Do the same thing with the locks too this should tell you what is drawing so much power.
If you take it to a shop you might be looking at a few hrs of labour.

Hope that helps and best of luck.By the way it be a good idea to buy a Haynes service manual or a manual that gives you electrical diagrams on that car.Plus try calling around about the repair bec some small family owned shop might fix that with ease bec they know those cars well and usually offer more fair repair rates too.Look for shops that advertise their GM experts too.
 
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