Question about 2000 Mercury Cougar

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Where are all the ground wires for the motor and computer on a 2000 mercury cougar?

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  • roger_malcom Oct 01, 2009

    i have an alternator problem with this vehicle. i have put on a newly rebuilt alternator,and still have a problem with charging. it quit charging again on me just day's after it was installed. the only code i have is for the evaporator canister,so i think it moght be a ground wire aprt somewhere,but don't know where to look for the ground wires where they attach on the body from the battery or computer.

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On the engine and body all comes from battery

Posted on Oct 01, 2009

  • Steve Sweetleaf
    Steve Sweetleaf Oct 01, 2009

    all grounds lead from battery.open hood find battery, NEG- side. follow those wires to the engine.there your engine ground.your chassis ground will be close to the battery on the chassis.clean them with baking sode clean battery with it to. works wonders..your computer ground would be under the dash. which sucks.hard to find.remeber anything inside is grounded by the chassis ground.also your engine should have a ground from engine to chassis dont hurt..if your rear lights arent working it may be the ground on the rear lighta themselfs.

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Look inside the engine compartment. There are wires around the engine bay, on the fenders/fenderwalls. If it is on the fender, it is a ground. On the engine also. Inside the car, under the carpet, by the kick panels also. Pull the carpet back quite a ways, and look for wires screwed to the metal.

Posted on Oct 01, 2009

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