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One Wire Alternator [message #195433] Sat, 12 January 2013 22:27 Go to previous message
SteveW is currently offline  SteveW   United States
Messages: 538
Registered: June 2005
Location: Southern California - Ora...
Karma:
Senior Member
Greetings again from the new guy...

Among other things that I'm still figuring out on my new coach - I started to chase my intermittently glowing alternator light.

I purchased an APC a while ago - and attempted an install today.

Simple - right ??

Almost. I discovered that I have a "one wire alternator" so no remote voltage sensing...

The alternator part number is Bosch 0120 469 644 645. The label also indicates 80A. Our friends at google tell me that this is a SAAB OEM part number. Makes sense, as the previous owner was a SAAB test driver.

The coach also has a voltmeter that reads above 12 volts - maybe 13 (it's an analog dial) when the engine is running. Oddly though - it doesn't register any voltage at all for the first few minutes of engine running. I haven't yet chased the connecting wires to see where it's reading voltage.

So... I'm seeking advice from the brain trust:

Shall I just live with the glowing alternator light??

Do I still have the failing nichrome wire danger??

Shall I replace it with a proper voltage sensing alternator ??

As always, thanks in advance for this incredible collection of expertise and y'alls willingness to help the new guys.

Steve W
Southern California
1973 23'






Steve W 1973 : 23' Southern California
 
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