1991 mercury cougar Ls voltage regulator wire is preventing charging, What to do?
40

Asked by Erick Apr 18, 2017 at 09:44 PM about the 1991 Mercury Cougar LS Coupe RWD

Question type: Maintenance & Repair

The car will not charge unless the light green/red wire is in direct contact with
the battery. Once off, the alternator stops. If i leave the wire their the battery
dies after 2 hrs. So what can i do to fix it. (name tools or methods)

7 Answers
70,925

Kelly answered 7 years ago

TRY AND ADD A DIODE IN THE WIRE..THAT ONLY ALLOWS POWER/VOLTS TO FLOW ONE WSY ...TO THE BATTERY

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Erick answered 7 years ago

Do you think it could also be the charger indicator on the dashboard?

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40

Erick answered 7 years ago

Yeah the wire gets power only at run position of the ignition.

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Erick answered 7 years ago

My alternator is new mate. Its just the light green/red wire that attaches and everything is back to normal until you turn it off and drains the battery

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Erick answered 7 years ago

Should i try taking out the dash and seeing if the charge indicator light is blown or burnt because i only have one light that shows up on the dash and its the check engine light. PS: the car has been sitting for 3 yrs

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Erick answered 7 years ago

back to the corroded connection. Where could a corroded connection be at alternator or what?

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