voltage drop


Information and questions on GL1100 Goldwings (1980-1983)
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Chewy
Posts: 249
Joined: Thu Apr 18, 2019 11:07 pm
Location: Readyville, TN United States
Motorcycle: 1980 1100i Interstate
1983 1100a Aspencade

voltage drop

Post by Chewy »



how much voltage drop should i expect to see from the regulator to the battery? i have cleaned the contacts at the regulator, as well as replaced the female crimp-on connections at the solenoid.

if the voltage coming out of the regulator is 14.22v, measuring across the battery i get 13.76v. 13.76 is charging the battery, but is there anything i can do to get that extra .4 of a volt at my battery?

would it mess anything up if i jumped a wire from the regulator straight to the battery?


all the lights are currently stock, and i have replaced the dogbone with a blade fuse adapter. the regulator was put on in the past year, and the stator measures good.


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AZgl1800
Posts: 2797
Joined: Thu Oct 30, 2008 2:46 pm
Location: Lake Oologah Indian Territory USA
Motorcycle: 2009 Piaggio MP3 250cc https://imgur.com/foGDjgv

'02 GL1800 lives in Dawsonville, GA now.
My son is going to enjoy it for many years to come.

Re: voltage drop

Post by AZgl1800 »

the OEM wiring goes through a lot of in-between connections plus those awful nylon connectors with the pins that tend to melt.

DaveO430 recommends using a relay to run the Regulator Wire direct to the battery with #12 wire, that will take care of the voltage drops.

The relay would only be activated when the key is ON.
~John

'02 GL1800
2009 Piaggio MP3 250cc
User avatar
Chewy
Posts: 249
Joined: Thu Apr 18, 2019 11:07 pm
Location: Readyville, TN United States
Motorcycle: 1980 1100i Interstate
1983 1100a Aspencade

Re: voltage drop

Post by Chewy »

AZgl1800 wrote: Wed Aug 11, 2021 5:10 pm the OEM wiring goes through a lot of in-between connections plus those awful nylon connectors with the pins that tend to melt.

DaveO430 recommends using a relay to run the Regulator Wire direct to the battery with #12 wire, that will take care of the voltage drops.

The relay would only be activated when the key is ON.
what about instead of a relay, i use an auto-resetting breaker?
im using that on my 1980 with the poor boy mod. nothing but the breaker between the alternator and the battery.
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