Mercury Grand Marquis Problem Report

Mercury Grand Marquis Battery Light Due to Damaged Alternator Connector

(3 reports)

The battery light may illuminate on the instrument panel because the alternator wire harness connector is damaged. A new connector kit is available and should be installed to correct this concern.

I have had this problem and replaced the alternator 2 times and battery 2 times. Car now seems to have some electrical problem. -
The deam passional light want work when you turn them out. -
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new alternator (2-3 mo); new battery (installed today); new serpentine belt; new belt tensioner...
don,t know a code but no tail lights no turn signal no hazard no interior lights or trunk light...
My batt light comes off and on and the car is running rough almost as though it