The alternator should work that way, But if it is failing it can make problems for the ignition. The best practice is to have the alternator checked by a real Auto Electric store/shop. Not a high volume parts store. If you are still concerned, try this test. Hook up a separate battery to the ignition coil/ballast resistor and then start the engine with the normal ignition turned off, and then start the alternator. If it stays smooth, replace the alternator. Assuming it is a Delco 10SI alternator, the terminals will be BAT, 1 and 2. Bat to amp meter load side, #2 to Bat, and #1 to a idiot lamp (marker light Not LED) then to the ignition coil supply from the on off switch. (assumes it is coil and points, not a Mag. If a mag, no connection can be made from alt to mag. Jim
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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