Help! Speedy Jim

A club member emailed me with a question. 1978 Bus 2000cc. Altenator light came on with the key in the off position and stays on with key removed. Goes out when engine cranks up. What could be the problem. BTW disconnected battery so it wouldn't run down. Thanks for any inputs.

"Wild" Bill Tucker and Linda

'78 VW Bus ( "Old Rusty" )

'76 Bug (It's in the garage being rewired, and interior installed, T-3 rear Brakes & Ghia Front Disc)

'67 Squareback ( Soon to be on the Front burner! )

Rare Air VW Club Website:

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Wild Bill
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Could be bad (leaky) diode in the alternator. Check for voltage on D+ (should be zero) with key off. Check for current flow into B+ (should be zero) with key off.

An auto parts store may be able to do the necessary tests.

Speedy Jim

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Speedy Jim

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