need help with fuses

[greatwhiteshark]

I need to pick a few brains out there I have just replaced the fuse box on my 1980 xs1100 special everything went well except the p.o. didn't have fuses in the holders he had just stuck all the connectors together .I have looked everywhere to try and find out what fuses go in what spots and I can find this info nowhere the manual says the fuse box has them listed but I am assuming that they are listed on the back of the cover which I do not have now I have seen a few photos on this site of guys who have replaced their fuse boxes and it looks from the photos that the it takes 3 -10 amp and 1-20 amp now if this is correct where do they go, from the picture I saw it looked like going from the rear of the bike forward it went 10-20-10-10 but when I was stripping the wires there was one set of wires for one of the fuses that was most definately thicker than the other 3 and I am thinking that this would be the 20 amp fuse if so then it would go 10-10-20-10 from rear to front I never imagined that this would be the difficult part of replacing the fuse box, so I call on the xs1100 gods to hopefully provide answers ....thanks....mark

[mitch]

Check this out

Try going to the forum page go down to (modifcations) click on electrical, there are 3 0r 4 threads there on replacing the fuse box HTH..........MITCH

[TopCatGr58]

Proper Fuse Order

Hey there GWS,

Your assumption about the thicker wire is correct, the order from rear to front, or left to right, is 10-10-20-10, as per the supplement info for 80-81 models. The 20 is actually for the "turn signals"!! Also the external aux terminal fuse is 10, and the other "MAIN" fuse is 30A. HTH.
T.C.

[greatwhiteshark]

thanks TopCat got it all set up now .....cheers...mark

[strom]

OK, I have the 78E
Gonna replace the (non-original) fusebox with (new non-original) fusebox.
The fuses are a mess... as we all know, there are four in the fusebox and 2 main fuses...somewhere else.
Currently I have all 6 fuses in one fusebox.
3x16A
2x8A
1x10A
...go figure...
So basically, I'm gonna pull out fuses and see what dies.
Like said before, no info on fuses amperage.
I found out the following:
Tail: 10A
Head: 10A
Signal: 20A
Ignition 10A
and from the info here
Main: 30A

Got one fuse missing.... I have 6, info for 5. Any ideas on the TWO main fuses?

LP

[greatwhiteshark]

I'm not sure about 6 fuses , my original fuse box held 4 fuses 3 of which are 10 amp and 1- 20 amp and then there is one 30 amp under the left side cover , that being the main fuse . this is for a 1980 special your model could be different . Try checking with ratbyk I know he has a 78 e . Hope that helps.....cheers ...mark

[ratbyk]

Fuse Box

I have changed the fuse box on my 78E. The wiring may not be in it's original order. Mine is set up as follows: Back to front on top: wires are colored brw,brw, rd, brw. Fuses are 10, 10, 20, 10. Wires across the bottom are: brw, red w/ yellow stripe, red, and red w/ white stripe. Seems to function OK. Have run it like this for over 2 years with no failures or problems.
Ken/Sooke
78E Ratbyk
82 FT500 "lilRat"

[TopCatGr58]

The only other thing that I can think of for that 6th fuse is the AUX slot that took a 20A, where you could wire an extra electrical device to the included screws and have it fused!!??
T.C.

I thought it funny that the turn signals had a 20A! I guess it was because the need for more draw to run the thermal flasher unit!? Since I went to LED's and electronic flasher, I was able to run a 15 there instead! My non-stock fuse holder was only rated for max 15A, so glad it worked!

[strom]

In the 81H/SH manual it says there are 4 fuses in the fusebox and 2 more under the left side cover. Those are supposed to be MAIN fuses.
Heck, gonna wire it up as it was till now. Just gotta get me a fusebox. The local electronics shop donesnt have it in stock. Doh!

LP

[strom]

Got my new fusebox I ordered... for 8 flat fuses... gotta have some reserve

I didn't find the main fuse on mine yet... the wiring seems to be original, with some patching up done, not too good at that.
What does the main fusebox thingie look like... the 30A one?
Supposed to be under the left sidecover... I got only my turn signal cancelling unit there.

So, I got these connections... OK, there should be these connections:

Brown - 10A - Brown
Brown - 10A - Red/Yellow
Brown - 10A - Red/White
Red - 20A - Red

Something - 30A - Something which I didn't find on the wiring diagram.

Only 3 fuses seem to make a difference if I pull em out. So, any info on the main fuse on 78E would be welcome.

LP

[slicky5150]

The 78 E had 4 fuses in the fuse box and an accessory fuse. There was no main fuse under the left side cover.

Red/Red main 30 amp
Red/Yellow headlight 10 amp
Brown/Brown turn signal 20 amp
Red/White Ignition 10 amp
Red/ Black Accessory

Assuming the acccessory is one of your 6 fuses the po must have added a fuse, trace the wires from the odd fuses and see where they go. You had mentioned a brakelight fuse. This must have been added if its there, the brake light did not have its own fuse.

Good luck, hope you get it squared away, Chad.

P.S. If anyone is looking for a replacement fuse box there are some real nice ones used in high end car audio and marine applications. Just search around a site catered to these interest. Some of them are reasonably priced and some are not, but they are very slick.

[Lord Grizzlon]

my bikes po ran a wire from the battery direct to the front.. but i keep blowin my cdi (5 in 3yrs), all bulbs in gauges, and ocassionally shattering my h4 headlamp bulbs to almost powder. wanna put a fse on the line. any idea wht amperage 2 use?

[skids]

It sounds like you had better check out the charging system. Maybe the volt regulator is stuck "on." Fusing the circuit is a damn good idea, but I'll bet you start popping fuses!

Originally posted by Lord Grizzlon
my bikes po ran a wire from the battery direct to the front.. but i keep blowin my cdi (5 in 3yrs), all bulbs in gauges, and ocassionally shattering my h4 headlamp bulbs to almost powder. wanna put a fse on the line. any idea wht amperage 2 use?

[xswilly]

here is a picture of my 78E fuse panel
my 80G is the same

<img src="http://img.photobucket.com/albums/v480/xswilly/MVC-508F.jpg">

[xswilly]

lets try this again