how many lights is to much for electrical system?


Information and questions on GL1100 Goldwings (1980-1983)
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halcombrick
Posts: 285
Joined: Tue Dec 16, 2014 12:09 am
Location: Lafollette, tennessee
Motorcycle: 1982 GL1100 Interstate

how many lights is to much for electrical system?

Postby halcombrick » Mon Dec 29, 2014 10:30 am



My 82 gl1100 I had a lot of add on lights when I got it, driving lights on the fairing neon light bars behind the fairing lower vents as well as neon under the rear fender, it has a lot of lights on the rear bumper don't know if they are factory or not can my charging system handle all of this? Thanks for all the help guys. Rick.


Rick, 82 GL1100 Interstate

f1xrupr
Posts: 396
Joined: Mon Jan 13, 2014 6:13 am
Location: Triplet Va
Motorcycle: 1980 gl 1100 Std. Vetter

Re: how many lights is to much for electrical system?

Postby f1xrupr » Mon Dec 29, 2014 4:55 pm

If they are LED bulbs it can. Use a multi meter on the battery terminals. Not running- about 12.5 volts....idling-about 13 volts...4000 rpm-about 14+ volts (it might need to run a minute to achieve those values). If the volts are low, you can swap out tail light, running lights, etc with LEDs to achieve higher battery voltage. Gl 1100 s only put out 20 amps @ 5000 rpm...about 17amps @ 3000 rpm. I think lights are cool...
My exercise bike is a goldwing.

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redial
Posts: 1993
Joined: Mon Jan 03, 2011 1:17 am
Location: Kapunda, SouthAustralia
Motorcycle: 1997 GL1500 Spectre Red Aspencade

Re: how many lights is to much for electrical system?

Postby redial » Tue Dec 30, 2014 2:20 am

Ohm's Law is what you are after. Add the wattage of each bulb to give you the complete load, (not forgetting the headlight and tail light), this is the total power consumed with the lights on. The watts divided by the volts will give you the amps being consumed. Going back to school, Volts is the pressure (like water pressure, a high pressure hose will know you over - so will high voltage); Watts are what cause the 'glow'; and amps is the amount of electricity that you use. This is a slight simplification, but it is good enough for calculating what size alternator you need.
Len in Kapunda

The world is not going to finish today, as it is already tomorrow in Australia and New Zealand, and other islands of foreign nations such as Guam and Samoa.

f1xrupr
Posts: 396
Joined: Mon Jan 13, 2014 6:13 am
Location: Triplet Va
Motorcycle: 1980 gl 1100 Std. Vetter

Re: how many lights is to much for electrical system?

Postby f1xrupr » Tue Dec 30, 2014 7:20 am

Wattage is a great way to calculate current draw. However, due to the sensitivity of the system, the slight variables of the charging systems components (output of that particular stator, slight power losses for diodes, 35 year old conections...etc), and the possibility of not being able to find exact wattage values of some components (ignition system, after market fuel pump...mine has one...unmarked neons or other novelty items...etc), I believe any other approach other than a digital volt meter directly on the battery would be slightly inaccurate at best. For planning additional lighting etc, wattage calculation is great.
My exercise bike is a goldwing.

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virgilmobile
Posts: 7659
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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: how many lights is to much for electrical system?

Postby virgilmobile » Wed Dec 31, 2014 11:13 am

Keep in mind...The bike was designed to have a adequate charging system for all OEM equipment.
Anything you add will have an effect.
With the use of LED lighting,you can replace one lamp with more than one LED.
You really want to keep the load very close or lower than the original specs.
Yea I know that the 1100 has a extra 80 watts or so of power.So says the specs.However,that's with a great charging system,good battery AND at 3500 rpm.

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tom84std
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Re: how many lights is to much for electrical system?

Postby tom84std » Tue Jan 06, 2015 2:53 pm

When I bought my 1000 it had two sealed beam driving lights and about eight bullet lights which were 1156 bulbs. My alternator was fried. I do believe some of that could be attributed to the scotchlock connectors they were all connected with. The OEM equipment alone is quite a load on the system itself. After replacing mine and my brother's (1200) alternators I am a little nervous about overloading. My brother fitted an automotive volt meter to his just to ease his mind. Any time he could glance down and see exactly what the system was doing. Scotchlock connectors are easy and time saving little devices but they WILL fail with time and weathering. If that's what you've got, do yourself a favor, remove them and get out the soldering iron.

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virgilmobile
Posts: 7659
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: how many lights is to much for electrical system?

Postby virgilmobile » Tue Jan 06, 2015 3:01 pm

I also added a digital volt meter to each bike I've had.
Not so much to agonize over the tenths of a volt but to watch for a sudden drop or increase.This is to alert me of a impending dead battery(and bike) while driving and allow enough time to get it fixed...or to a safe location.

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littlebeaver
Posts: 4420
Joined: Mon Sep 21, 2009 6:11 pm
Location: Kansas City, Kansas
Motorcycle: 1981 gl 1100 I , 79 Yamaha XS11
Special, 82 Kawa 750 CSR, 82 Kawa 750 LTD, 03 Kawa Nomad 1500, 99 Kawa Voyager 1200

Re: how many lights is to much for electrical system?

Postby littlebeaver » Tue Jan 06, 2015 3:26 pm

I can light up the Moon,,,LOL ( Alternator Conversion) ....I have no more worries about the charging system...Or adding too much stuff to the bike... 55 amps is plenty enough for whatever you add....




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