Electrical ground points??


Information and questions on GL1500 Goldwings (1988-2000)
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offcenter
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Joined: Sat Sep 22, 2012 2:10 pm
Location: Lake Hopatcong, New Jersey
Motorcycle: 99 Gl-1500 SE
76 GL-1000
77 Honda Trail 90

Electrical ground points??

Post by offcenter »



Hi guys.
I have the OEM shop manual for my '99 1500SE.
The electrical diagram seems to show a ground point near the engine's dipstick.
The only thing I see anywhere near the dipstick is what appears to be the oil pressure sender.
Any idea what ground they are talking about?

The "why" of this...
Converted the dash and all running lights and directional signals to LEDs.
Works great except for one thing.
With the engine running, the two indicators in the dash are glowing faintly.
Switching on either directional signal, the indicators work fine.
This just HAS to be bad ground somewhere.
Thanks guys.


George in Jersey.
99 Goldwing GL-1500 SE
76 Goldwing Gl-1000
77 Honda CT-90 "Trail 90"
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DenverWinger
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Re: Electrical ground points??

Post by DenverWinger »

offcenter wrote: Fri Mar 19, 2021 6:09 pm The electrical diagram seems to show a ground point near the engine's dipstick.
The only thing I see anywhere near the dipstick is what appears to be the oil pressure sender.
Looks like an oil pressure sender but isn't. That is a switch in the "ground" side of the starter relay circuit which prevents actuating the "B" starter relay when the bike is in reverse gear.

There's a heavy wire (probably green) with a big lug on the end attached by a bolt to the bike frame somewhere nearby that switch and dipstick (I'd have to go out to the garage and look/take a picture), this will be your ground point. That green wire will go to a multi-pin connector, feeding all the pins on one side of the connector, the other side of the connector will have a plethora of green wires going to the various circuits which ground here. Fault is probably a corroded or burnt pin in that connector. Also possible to have corrosion where the main ground point bolts to the frame.

There's another main ground point under the seat attached to the middle of the cross-member between left/right side of the frame roughly in between where passenger and driver sit. Likewise feeds another multi-pin connector. These grounds serve the rear of the bike including turn signals, you may have some resistance in that connector.
Last edited by DenverWinger on Fri Mar 19, 2021 11:13 pm, edited 1 time in total.
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MikeB
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Re: Electrical ground points??

Post by MikeB »

I assume you are asking about ground G100.

Here is a picture of it.


MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 1968 - 1986 / Flight Engineer C-130E - C-141B - 1986 - 1992. Retired
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offcenter
Posts: 861
Joined: Sat Sep 22, 2012 2:10 pm
Location: Lake Hopatcong, New Jersey
Motorcycle: 99 Gl-1500 SE
76 GL-1000
77 Honda Trail 90

Re: Electrical ground points??

Post by offcenter »

Thanks guys!
No wonder I couldn't see those grounds. I never pulled the side plastic off.
And that thing is not a ground? It's for reverse??
Well blow me down! Never would have expected that.
Thanks again.

P.S. The ground under the seat is fine. It was burnt inside that 21 pin connector, so I bypassed it and added my own ground to the frame under the passenger seat.


George in Jersey.
99 Goldwing GL-1500 SE
76 Goldwing Gl-1000
77 Honda CT-90 "Trail 90"
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