1999 Deville - interior lights went off. Fuse brown.
1999 Cadillac Deville - interior lights went off. I checked the fuse and found the one for interior lights was brown. I bought a pack of new fuse. Insert one, with a lightly click sound, it is brown again. I guess, must be a short.
Can anybody points a best place to start diagnose?
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Blue = Neutral, Brown = Live and you are correct Yellow & Green = Earth
The live wire (brown) must be connected to the fuse if there is one.
You could say that the blue wire is negative (or zero) and the brown wire is positive as this is the one the high current passes through. The blue wire completes the circuit, which is needed for current to flow.
Hope this helps!
More than likely it blew the fuse in the transformer, although it is fairly easy to replace this fuse it is important to find out why it blew. The transformer is under the machine and held in place by 4 screws. Take this out and ease the transformer out, it will still be hooked to the connecting wires just gently disconected them. Once you open the transformer you will see a small fuse, you can take it to radio shack and get an EXACT replacement.
I have fixed 100s of these of the last 25 years
There is a fuse in the the base plate that has blown. It is soldered in and is special fuse you won't find at Radio Shack. Unfortunatly it needs to be fixed by a Pfaff dealer on someone with access to the fuse. If you have the work done, make sure they replace a certain reisitor on the base plate at the same time to prevent this from happening again (per Paff).
Sorry for the bad news and best of luck.