7 volt reg

Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
Post Reply
Posts: 1
Joined: Mon May 09, 2011 8:13 pm
Location: Canada
Motorcycle: 1982 gl1100

7 volt reg

Post by steeler92 » Thu Jul 03, 2014 8:14 am

i recently installed as per instructions a new 7 volt reg that i purchased from this site. it melted after a few mins once bike was turned on. i then put back the old reg. it seems they both are heating up for some reason. can anyone tell me why the regs are heating up so hot. temp and fuel gauges dont work thanks

User avatar
Posts: 8294
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 7 volt reg

Post by virgilmobile » Thu Jul 03, 2014 8:51 am

The only way it could do that is if the output line (7 volt) has a direct short to ground.The green/black wire....not to be confused with the standard green ground wires...or even attached to them or grounded...
Somewhere between the regulator and the gauges.
Verify by unhooking the 7 volt output wire and turning on the key.it should have 7 volts on it.
If you have a ohm meter,attach it to the 7 volt wire that feeds the gauges with the key off.
It will read some resistance but should not be near zero.
Check where that wire is attached to the instrument cluster,just incase it was attached to a ground lug instead of the power feed terminal.
Everything should be color coded and marked.
That 7 volt wire could also be pinched under a bolt.

User avatar
Site Admin
Posts: 18747
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 7 volt reg

Post by WingAdmin » Thu Jul 03, 2014 10:10 am

What Virgil said is correct - if the 7 volt output is shorted to ground, the voltage regulator will overheat and overload fairly quickly. That's the only thing that can cause the regulator to do that, so somewhere between your regulator and the meters, the wire carrying the 7 volts is shorted to ground. The screw terminal that the output wire from the new regulator connects to is connected to the input of both meters. Make sure it and the metal it is mounted on isn't shorting to ground somewhere.

Post Reply