Power Window

There are many old cars out there and there are many problems that creep in as the car starts to age. One of the problem could be the Power Window motor which operates intermittently for no apparent reason.
Checking for proper ground is the first thing to look for and also the available voltage at the motor terminals can very well hit the mark but sometimes even proper ground and nominal voltage check reveal no problem. In this case it could be the motor itself. A  replacement would be a good idea but costly and it may well be the circuit breaker integrated into the motor unit that is causing the problem.
One way to resolve this is to remove the motor housing and solder a jumper wire across the circuit breaker as shown below:

 Solder across the two terminals lying on both sides of the circuit breaker ( circuit breaker is the tapered metal piece with a round dot at the top).

As a precautionary measure, add a 10A fuse in series with the blue wire leading out of the motor assembly.