Vehicle is a 1971 Exmod 109 converted to a Lucas alternator. I had a smoking dash event on my way to NC from NY. The wire that burned is the lead from the ignition warning light to the source side of switched fuse. After this the alternator stopped charging the battery. I put a voltmeter in inspection sockets and coud see battery losing charge. The voltage did not change when reved engine a little. Ran from NY to NC on batteries
I checked the leads from the ignition warning light>Alternator, IGN loation on terminal block>Coil, IGN location on terminal block> fuse location where wire burned, all good. Replaced the burned out wire.
Fired up the truck and could see a rise in voltage 12.7 to 13.4 when reved engine a little. Appears alternator is working. Turned the key off and engine did not shut off. Opened the ignition warning light circuit and engine shuts off. Key switch works it starts and stops engine if ignition warning light circuit is open. The only thing I can think that is going on is that the coil circuit is being back fed through the ingition warning light circuit. I open this circuit and it will shut off, closed the engine continues to run..
I checked the leads from the ignition warning light>Alternator, IGN loation on terminal block>Coil, IGN location on terminal block> fuse location where wire burned, all good. Replaced the burned out wire.
Fired up the truck and could see a rise in voltage 12.7 to 13.4 when reved engine a little. Appears alternator is working. Turned the key off and engine did not shut off. Opened the ignition warning light circuit and engine shuts off. Key switch works it starts and stops engine if ignition warning light circuit is open. The only thing I can think that is going on is that the coil circuit is being back fed through the ingition warning light circuit. I open this circuit and it will shut off, closed the engine continues to run..
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