Extra Electrics

Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
Post Reply
Posts: 67
Joined: Fri Mar 09, 2012 10:25 am
Location: ireland
Motorcycle: 1980 GL1100

Extra Electrics

Post by moritz1100 » Fri Jul 06, 2012 3:13 am

OK, started thinking about my favourite winter rally at the Nurburgring in Germany next February and figured I might as well get started on preparing the bike. Really looking forward to it this year as I'll be doing it on my, new to me, GL1100 sidecar outfit. My partner is going to be hack monkey for the trip and I want her to be comfy and entertained, i.e. not complaining or making conversation in my ear over the intercom :shock: So, I figure I'll need to put in at least one 12v socket in the sidecar to charge an ipod or something and she said she'd like to be able to watch a dvd, so maybe a little lcd screen and dvd player. I want to put another 12v socket inside the dummy tank for a gps and I'd like to have heated grips for once. The bike could do with spot lights up front and a fog light at the rear. It's a long drive, almost 3000 km's return and 2 ferry crossings.
So, I'm going to replace the standard fuse box with a blade fuse box anyway. I want to install a split charge relay and connect a second car battery in the hack, then run a circuit to another fuse box and on to the 12v cigarette lighter sockets and aux stuff. Should I run the extra lighting off that circuit or the bike's existing lighting circuit? I've heard that the old GL's charging system can't really handle much in the way of extra light's, what do you guy's think of my plan? I definitely don't want to fry my stator.. Haven't bought anything for this job yet,just making a shopping list for Ebay..

User avatar
Posts: 494
Joined: Sun May 29, 2011 8:17 pm
Location: sterling heights, mi
Motorcycle: 1985 Honda Goldwing GL1200
117k miles
1977 Kawasaki kz400
1978 Suzuki GSXr750
1980 Kawasaki GPZ400
1975 Honda CB360T

Re: Extra Electrics

Post by seabee_ » Fri Jul 06, 2012 3:40 am

That's going to cause your stator to work too hard. The stock charging system is not designed to handle that much. I would suggest putting a car battery in the side car and using a regular battery charger to charge it over night when you park it. Your best bet for that set up would be a poorboy conversion to handle that much load.
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic

User avatar
Posts: 8361
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: Extra Electrics

Post by virgilmobile » Fri Jul 06, 2012 1:01 pm

I remember doing the math once on my 83 gl1100 standard.
The charging system maxed out at 25 amps.
The bike draws 10.5 amp just for it's stock electric.
A good battery draws 3.5 amp to keep it charged and 13 amp for the first 5-10 minutes after cranking.
Soooo, with all things in good shape,the system was able to provide a maximim of 11 amps at 12 volts.

This translates to about 130 watts.
*****Beware that is maximum peak load just before all the smoke comes out.*****

Generally,I wouldn't load it more than 70% of max or about 90 watts.Just for safety.
That's why you can't put on 2@ 55watt driving lights.It will drain the battery down in a few hours of riding.

You have to add up everything so you don't strain the system too much and leave you dead on the road.
Also,when your finished,get a digital volt meter or battery monitor for the bike.Just to keep a watch on it.

Posts: 67
Joined: Fri Mar 09, 2012 10:25 am
Location: ireland
Motorcycle: 1980 GL1100

Re: Extra Electrics

Post by moritz1100 » Sat Jul 07, 2012 5:42 am

Thanks guys. Think I'll try to find a poorboy kit, anyone have any experience with adding a car alternator to the 1100?

User avatar
Posts: 3120
Joined: Tue Mar 09, 2010 7:57 am
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: Extra Electrics

Post by RBGERSON » Sat Jul 07, 2012 8:01 am

lots of guys have..basics..you have to drill a big hole in the front belts covets, make a bracket to hole the alternator, add a pulley on the end of the crank shaft. Search poorboy and check out other GW sites.



Post Reply