Electrical Trouble - Pulsing power

Lee

Registered User
My 90 SC has some sort of electric thing happening again. At a stop light I can feel the power rise and fall and can see the headlight dim and come back up like it has a pulse. Sometimes it will start running real rough and barely runs, I can nurse it to the curb, then suddenly it starts running right again. Also notice that the radio loses power when this starts.
Someone mentioned a bad ground, don't know where to look for that. Any ideas?

Also ready to sell it. California car. White 5 speed, blue cloth interior. It was replaced by a new Mach 1 in 2003 and has been sitting ever since.
 
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