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General Forums => VW Club Corner => Topic started by: blarneyman on June 25, 2007, 09:39:20 PM

Title: Generator Output Voltage
Post by: blarneyman on June 25, 2007, 09:39:20 PM

I recently bought a 1970 Ghia that had some electrical issues. I replaced the voltage regulator (with a used one) and the generator (used as well). There was a short in the wiring for the tach (disconnected right now).

Question:
What should the output voltage be on the generator at an idle? With all the lights on, it's about 13.5v at idle or reving the engine. If I turn off the lights it goes up to around 14.5v at idle and over 15v reving. This seems to be high to me but I've never measured it before.

Title: Generator Output Voltage
Post by: jason_hamilton on June 26, 2007, 11:01:00 AM

The mean (average) regulating voltage for most 12V VW generators is 14V at 2000 rpm, with a cut-in speed of 1450 rpm.

I should have mentioned this when I gave you the generator, but everything you ever wanted to know (and more) on testing and servicing it is on my website:
http://www.type-14.com/Fiche/1-2%20-%20Generator.pdf (http://www.type-14.com/Fiche/1-2%20-%20Generator.pdf)

Title: Generator Output Voltage
Post by: blarneyman on June 27, 2007, 06:17:28 AM

thanks Jason, that will be very helpful :rockon: