Fox T-Bird/Cougar Forums

Technical => Electrical Tech => Topic started by: 1WLD BRD on April 28, 2020, 07:40:54 PM

Title: 1984 Cougar install Autometer gauges and now Alternator isnt charging.
Post by: 1WLD BRD on April 28, 2020, 07:40:54 PM
ok I know I should know this but what wires should I be running through the Voltmeter to have the alternator charge.  worked perfectly fine before the gauges, and now no power is getting to alternator.  jumpered the alternator and it works fine and even changed the regulator.  I know it has something to do with how I hooked up the gauges.

Title: Re: 1984 Cougar install Autometer gauges and now Alternator isnt charging.
Post by: Haystack on April 28, 2020, 07:44:03 PM
The green\red strip wire to the alt needs key on. Normally this goes through a resistor or something and the battery light in the dash.
Title: Re: 1984 Cougar install Autometer gauges and now Alternator isnt charging.
Post by: Chuck W on April 29, 2020, 07:57:51 AM
Yeah, the dash light is part of the excitation circuit.
Title: Re: 1984 Cougar install Autometer gauges and now Alternator isnt charging.
Post by: 1WLD BRD on April 29, 2020, 10:45:58 AM
The green\red strip wire to the alt needs key on. Normally this goes through a resistor or something and the battery light in the dash.

Jumped that wire to 12 volt switched power.   It worked.  Thanks.