Charge light stays lit
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New User
Joined: Nov 2006
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Charge light stays lit
My '66 F250 has this problem. The alternator tested good, replaced the regulator, and field relay ( w/ a horn relay that looks the same phisically), and the idiot light stays lit. It actually brightens when the engine is revved.
A multimeter at the battery tells me that I have 13.83 - 14.03 volts coming into the battery. I'm stumped. Any ideas?
Bruce
A multimeter at the battery tells me that I have 13.83 - 14.03 volts coming into the battery. I'm stumped. Any ideas?
Bruce
Postmaster
Joined: Nov 2001
Posts: 3,351
Likes: 1
From: Escondido, CA
Have you disconnected the relay from the altenator, ran a jumper, and checked for the light? Run the jumper from the starter soleniod to figure out if it is the wire coming from the altenator. Check for a short in the wiring to and from the relay or a grounded wire in the dash.
Senior User
Joined: Mar 2002
Posts: 167
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I have the exact same problem in my '64. I have concluded that the universal ignition switch installed by the previous owner is the culprit. I'll be installing a Ford correct ignition switch as soon as spring arrives. Check your ignition switch connections.
Postmaster
Joined: Dec 2003
Posts: 4,423
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From: Clarksville,Tn
Bruce;
I'm no electrical troubleshooting guy;(Airharley advice will always over ride mine) but I have had a similiar problem in the past; it was the voltage regulator on the front radiator brace; that was out on my 66 to cause the same problem.
As for Jethro1; those 64 & below 6 volts a hold different playing field for me with those resistor's.
Mitch
I'm no electrical troubleshooting guy;(Airharley advice will always over ride mine) but I have had a similiar problem in the past; it was the voltage regulator on the front radiator brace; that was out on my 66 to cause the same problem.
As for Jethro1; those 64 & below 6 volts a hold different playing field for me with those resistor's.
Mitch
