no electrical power

[500gs]

Hey guys, I'm new here. I got a question. What would cause me to loose all electrical power. I do have a brand new battery that is charged. I left the key on while trying to figure out which wire was which for the rear brake light. I took the stock one off and mounted a led on there and now I have no juice to anything. Is there fuses on these things or what could it be. Any help would be appreciated thanks!!

[boggy]

HI, there is a main fuse 30a which is on the stator relay check to see if its blown. this can be found under the side panel on the right hand side. follow the red main wire from the battery to the relay.

boggy

[Cal Price]

The above is probably correct but if the fuse is OK check the housing, I had one corrode away to dust in less than a year after purchasing a new GS500 in 2003. The dealer fitted a new one under the warranty, it's a simple enough job and if you have to do it then fill it with Vaseline or similar and it will last for ever even in the rainiest places.

[500gs]

OK, Thanks guys, I wasn't sure I haven't had the bike very long,It's a project. It was just weird I left the key on trying to figure out how to figure out which wire was which for the tail light. It has 2 tractor flood light for the headlamps, I was just thinking that the flood lights where drawing to many amps or something and popped the fuse.

[Cal Price]

I would think that is highly likely. If the bike still has the original wiring then a diagram would help, there used to be one on this forum but I just did a search and could not find it. Perhaps it was a copyright issue or something, however it should not take too long to find one on the net somewhere.

[numus]

I had to totally remove that connector harness and wire an inline 30 amp directly to the positive terminal and ran the rectifier positive cable and the positive from the ignition switch to the fuse... The thing will corrode out and then there is barely any way to fix it.. Easier to just rewire away from it.

[Jeff P]

Timely thread.  I started my bike up today for the first time in a couple of months.  Cranked strong and fired right up.  It died a few minutes after taking the choke all the way off which isn't unusual.  Went to start it back up and it clicked once and then nothing.  No lights, no indicators, etc.  The battery tender jr. had a weird orange/yellow color on the indicator when I attached it but it was green a while later.  Voltage reads about 12.7.  Fuse is OK (it's a 20 amp BTW).  Battery is a 2 year old Scorpion AGM.  Any ideas?

jeff

[numus]

Timely thread.  I started my bike up today for the first time in a couple of months.  Cranked strong and fired right up.  It died a few minutes after taking the choke all the way off which isn't unusual.  Went to start it back up and it clicked once and then nothing.  No lights, no indicators, etc.  The battery tender jr. had a weird orange/yellow color on the indicator when I attached it but it was green a while later.  Voltage reads about 12.7.  Fuse is OK (it's a 20 amp BTW).  Battery is a 2 year old Scorpion AGM.  Any ideas?

jeff

Battery should be reading 13.2-13.5 fully charged.... What did it read after it went click?  If it is fully charged and reading 12.7 it is probably time to go ahead and get it tested/replaced... Try to push start it and see if it fires up, if it does your electrical system is probably ok.

[Jeff P]

After a couple hours on the tender, with the light green, the voltage read 13.2.  I switched the bike to On, the oil pressure light lit dimly (no headlight or neutral indicator though), and the voltage immediately dropped to the low single digits.  Gonna leave the tender on until tomorrow evening, see what happens and give it the push start. 

jeff

[adidasguy]

I think your battery is OK. There is probably a short somewhere. Start unplugging things and locate the culprit.
First, unplug the LED stuff you put on. When you put it on, things went sour.

[BaltimoreGS]

Timely thread.  I started my bike up today for the first time in a couple of months.  Cranked strong and fired right up.  It died a few minutes after taking the choke all the way off which isn't unusual.  Went to start it back up and it clicked once and then nothing.  No lights, no indicators, etc.  The battery tender jr. had a weird orange/yellow color on the indicator when I attached it but it was green a while later.  Voltage reads about 12.7.  Fuse is OK (it's a 20 amp BTW).  Battery is a 2 year old Scorpion AGM.  Any ideas?

jeff

Battery should be reading 13.2-13.5 fully charged.... What did it read after it went click?  If it is fully charged and reading 12.7 it is probably time to go ahead and get it tested/replaced... Try to push start it and see if it fires up, if it does your electrical system is probably ok.

12.65 volts is a fully charged battery.  It will read higher than that when taken off a charger but will drop down after it sits.  Voltage only indicates charge, it does not tell if the battery has enough cranking amps to turn over the engine. You need a load tester to determine that.

-Jessie

[numus]

After a couple hours on the tender, with the light green, the voltage read 13.2.  I switched the bike to On, the oil pressure light lit dimly (no headlight or neutral indicator though), and the voltage immediately dropped to the low single digits.  Gonna leave the tender on until tomorrow evening, see what happens and give it the push start. 

jeff

You have a dead cell... Time to replace the battery... Basically when a cell becomes toast it acts like a large resistor.. The battery will be charged up to the voltage the battery tender allows it (13.2 in this case) but at the cost of all amperage that cell would provide... When you apply a load across it, it drops the voltage greatly because there is no amperage...



Take it off the tender and dont put it back on.. Basically all that battery has the potential to do right now is become a large heating element... You said it is an AGM so that would be a bad idea since there is no proper vent for gassing if it occurs..

[Jeff P]

adidasguy - I didn't put any new lights on, that was the OP.  I hijacked his thread 

Took the tender off this morning and didn't even get a faint glow from the oil pressure light.  Looks like the battery is cooked.

I really liked the Scorpion battery's performance in holding a charge when the bike wasn't ridden, but totally dying in <2 years (got in it June 2010) isn't acceptable.  Batterystuff.com only has a 1 year warranty.  I'll probably go back to an el cheapo Energizer from Pep Boys.

jeff

[Jeff P]

So I called up batterystuff.com, where I got the Scorpion battery back in 2010, asked about a discount on a replacement and they gave me one for $40, normal price is $54.  They don't charge for shipping or taxes, got the battery in two days.  Put it in today and everything works fine. 

jeff