1974 911S Charging Problems

Alternator light on? Only showing 12 volts at the battery? Pulled the alternator 5 times only to have all the shops tell you its OK? Everyone wants you to replace the alt with an internal regulator type? Try this 1st: I assume you've done all the things in all the other articles like, cleaning, check the belt and connections, try another voltage reg. etc... use just the stock bulb without the socket, bend the little wire leads away from the glass bulb and connect to car wiring using small clip leads...my alternator then charged fine. If you don't have mini clip leads you can rig a temporary test with any 2-4 watt 12v test lamp. I had tried 2 other socket/bulb combos from my car but they didn't help. Then began a 2 year ordeal. I gave another socket a good cleaning and it's been charging ok. I can't believe I had several dirty sockets yet all the bulbs were operating ok, and no charge, very weird. Been fine for months now even after long sits. The "small bulb" sockets that Pelican sells 999-632-009-10-OEM are not for the "all glass" 1.2 watt bulbs Pelican 900-631-132-90-M97 in the older cars I found out the hard way these are for the push and twist bulb which is a better set up any way, and that is what I am now using. You can get the bulbs at any parts store. They are Wagner 11009 or a #3898 @ 2 watt/.17 amps 12Volts X Amps = Watts.

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[Nick at Pelican Parts]

Thanks for the Info. We appreciate it.

- Nick