08 grand marquis windows stopped working/radio stopped working

Asked by Dec 08, 2014 at 07:27 PM about the 2008 Mercury Grand Marquis LS

Question type: General

# 9 fuse is shorted. blows out as soon as you put a good one in. anyone run across this
before. Need to find location of short in dash harness(help)

2 Answers

6,115

Maybe..............one of the window regulator motors is bad, shorting out? Problem with that guess if that you'd have to take off the door panels one at a time to disconnect the power plug to the regulator motor, then stick a new fuse in and see if it blows. Maybe start at the last window you rolled up?

1,615

To make it a little easier when disconnecting all those window motors (I'd try the radio first, just because it's easier, but unlikely). Use 2 alligator clip leads and connect to a 12v light bulb and or a mallory sonalert or seat belt buzzer, then bridge the blown fuse, and you'll hear and or see when you still have the short.(light on, buzzer buzzing). also, with this method, one can shake wiring harnesses, at the doors and other places, and hear a change if there's a short. Also, find out from a wiring diagram exactly which things are connected to that fuse. (I don't have one for that year).

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