Take the fuse out to the clock, loosen the positive
terminal on the battery, wait till dark or darken the
battery area. Take the positive terminal and check for
a spark, getting that, start pulling the circuit's
fuses untill you loose the spark, this will be the
circuit to check for a ground. This can also be done
with a meter in line with the battery to check for a
amp drop when the area of the problem is isolated. Phil

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