Bad Voltage Regulator - or something else?
Road Warrior
Joined: Oct 2008
Posts: 1,334
Likes: 17
From: Rosamond, Cali
Check the regulator ground as others advise. The stator output is probably around 17-20 volts AC depending on RPM. The regulator output is probably around 13.8 to 14.4 DC, once again depending on RPM. If the stator output is ok, that points to something downstream.
Put your meter on AC and measure the battery voltage with the bike running. Then do the same on DC scale. If the DC reading is low, and/or the AC is high…and everything else is nominal (good ground), then I'd suspect the regulator.
Alan
Put your meter on AC and measure the battery voltage with the bike running. Then do the same on DC scale. If the DC reading is low, and/or the AC is high…and everything else is nominal (good ground), then I'd suspect the regulator.
Alan
Last edited by AlanStansbery; Dec 25, 2013 at 06:48 PM.
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Road Captain
Joined: Oct 2009
Posts: 728
Likes: 0
From: So Cal
Hi All:
Thanks much for the responses. I checked and cleaned all connectors and grounds (contact areas and mounting bolts) and, after reassembly, the battery still reads 14 volts at idle and 17 volts after I rev the engine for a few seconds. So... I'm going to gamble that it's the reg. Prices on ebay for OEM regs (from out-of-state dealers) was not that bad so I went ahead and ordered one. Hope it comes soon because it's PERFECT riding weather here in CA (he - he) .
Thanks again for all the great advise.
Thanks much for the responses. I checked and cleaned all connectors and grounds (contact areas and mounting bolts) and, after reassembly, the battery still reads 14 volts at idle and 17 volts after I rev the engine for a few seconds. So... I'm going to gamble that it's the reg. Prices on ebay for OEM regs (from out-of-state dealers) was not that bad so I went ahead and ordered one. Hope it comes soon because it's PERFECT riding weather here in CA (he - he) .
Thanks again for all the great advise.
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