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beemeerr11
Flying Brick Rider
Joined: 05 Mar 2006
Posts: 168
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 Posted: Mon Jun 01, 2020 8:45 am Post subject: Fuse Number 2 keeps blowing |
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In the last week on my 95LT I have gone through 3 number 2 fuses, tail light and parker light, I have tightened the brown earth wires in the rear tail light and I have checked and cleaned the bulb monitor connectors, anything else I should look for, I've had the bike 20 years, and never had anything like this before?
Cheers
Lou |
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flybd5
Flying Brick Rider
Joined: 01 Jul 2019
Posts: 371
Location: Massachusetts, USA
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| Posted: Mon Jun 01, 2020 8:59 am Post subject: Re: Fuse Number 2 keeps blowing |
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| beemeerr11 wrote: | In the last week on my 95LT I have gone through 3 number 2 fuses, tail light and parker light, I have tightened the brown earth wires in the rear tail light and I have checked and cleaned the bulb monitor connectors, anything else I should look for, I've had the bike 20 years, and never had anything like this before?
Cheers
Lou |
Relay done gone? Maybe you need to look under the seat, pull the relay and clean the contacts?
_________________
To err once is human. To do so repeatedly is incompetence.
1995 K1100LT SE |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10085
Location: Bumf***, WA
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| Posted: Mon Jun 01, 2020 12:47 pm Post subject: |
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How many miles on the bike?
Sounds like you may have a short somewhere, either in the gray/white wire that goes to the parking light or in the clump of wires that goes along the right frame rail to the rear lighting. The tail light wire in that clump is the gray/black wire.
You can eliminate the BMU as the culprit by removing it and shorting the terminals:
1) Short the front brake switch wire (Gray/Red) and the rear brake switch wire (Gray/Green) to the rear brake light wire (Gray/Yellow.)
2) Short the tail light power wire (Gray/White) to the tail light wire (Gray/Black)
ETA: This is why vehicles have fuses. Otherwise a fire could start. (Or all of the smoke could escape from the electrical system.)
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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Scott_Anderson
Site Admin
Joined: 05 Sep 2006
Posts: 3119
Location: Central Iowa, USA
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| Posted: Mon Jun 01, 2020 6:11 pm Post subject: |
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What work have you recently done on the bike.
_________________
Ride safe.
1995 K1100LT 0302044
1997 R1100RT ZC62149
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.) |
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beemeerr11
Flying Brick Rider
Joined: 05 Mar 2006
Posts: 168
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| Posted: Mon Jun 01, 2020 9:03 pm Post subject: |
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Hi Ted,
When you say relay, which one?
Hi Duck, the bike is just about to turn over 235,000 Kms, I traced the grey/white wire and seems OK I'll try shorting out the colors as per your advice, whilst I had the lid off the relay/fuse box, I also cleaned any connectors with contact clean in both the BMU and blinker relay.
Hi Scott the work done recently was all the issues I had with the bike overheating, which ended up being a faulty new thermostat from BMW, yes the tank was off numerous times as were all the fairings etc to remove radiator, (multiple times) also replaced the oil/water pump seal twice, thinking I installed it wrong the first time? I can now have all that fairing off in about 30 minutes I did it so often ?
Cheers
Lou |
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Scott_Anderson
Site Admin
Joined: 05 Sep 2006
Posts: 3119
Location: Central Iowa, USA
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| Posted: Tue Jun 02, 2020 5:52 am Post subject: |
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Sounds to me like you have a pinched wire somewhere, question is where.... or it could just be coincidence that your BMU is on it's way out.
_________________
Ride safe.
1995 K1100LT 0302044
1997 R1100RT ZC62149
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.) |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10085
Location: Bumf***, WA
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| Posted: Tue Jun 02, 2020 9:17 am Post subject: |
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What's the last thing that Scott_Anderson did to your bike? 
If you find that it is a short somewhere in the clump of wires that goes to the rear then you can cut the tubing off of that, implement a repair and then rewrap the wires in wiring harness tape.
That clump of wires is just held to the underside of the right side rear frame rail with zip-ties so you can do that without having to tear the bike apart.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE
Last edited by Flying Duck on Tue Jun 02, 2020 9:29 am; edited 1 time in total |
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beemeerr11
Flying Brick Rider
Joined: 05 Mar 2006
Posts: 168
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| Posted: Tue Jun 02, 2020 9:23 am Post subject: |
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| Scott_Anderson wrote: | | Sounds to me like you have a pinched wire somewhere, question is where.... or it could just be coincidence that your BMU is on it's way out. |
One thing I didn't mention, is that the BMU goes off with the mandatory front and rear brake touch, although the rear and front parker globes aren't blown as such and when number 2 fuse blows, the BMU doesn't light up???
Does that eliminate or put a different avenue to approach what it might be??
Cheers
Lou |
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beemeerr11
Flying Brick Rider
Joined: 05 Mar 2006
Posts: 168
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| Posted: Tue Jun 02, 2020 9:31 am Post subject: |
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| Flying Duck wrote: | What's the last thing that Scott_Anderson did to your bike?
If you find that it is a short somewhere in the clump of wires that goes to the rear then you can cut the tubing off of that, implement a repair and then rewrap it in wiring harness tape.
That clump of wires is just held to the underside of the right side rear frame rail with zip-ties so you can do that without having to tear the bike apart. |
Hey Duck,
I chased the wiring from the tail light, and it sort of disappears into the duck tail (pardon the pun) a bit before going to the right side of the battery, I'll check on the frame in between as I have a luggage rack there also, but it's been there for 20 years and may have rubbed through?
Cheers
Lou |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10085
Location: Bumf***, WA
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| Posted: Tue Jun 02, 2020 9:32 am Post subject: |
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Try shorting the terminals at the BMU connector in the relay box as I described above. If it still blows fuses after that then that will eliminate the BMU as the culprit.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE
Last edited by Flying Duck on Tue Jun 02, 2020 9:40 am; edited 1 time in total |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10085
Location: Bumf***, WA
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| Posted: Tue Jun 02, 2020 9:38 am Post subject: |
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| beemeerr11 wrote: | Hey Duck,
I chased the wiring from the tail light, and it sort of disappears into the duck tail (pardon the pun) a bit before going to the right side of the battery, I'll check on the frame in between as I have a luggage rack there also, but it's been there for 20 years and may have rubbed through?
Cheers
Lou |
Take the tail light lens off and then remove the two screws that hold the rear lighting connector to the rear of the black "wedge." Then you can cut the zip-ties that hold the rear wiring clump to the frame rail to free it.
Given how many miles(kms) on the bike it would not surprise me if the insulation on some of those wires has worn through over time and is causing a short.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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beemeerr11
Flying Brick Rider
Joined: 05 Mar 2006
Posts: 168
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| Posted: Wed Jul 22, 2020 2:55 am Post subject: |
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| Ok so as luck or unlucky would have it, the rear shock (IKON) ceased up. i ordered a YSS replacement, when I went to replace the shock, the rubber eyelet in the top had worn so much it was punching into the wiring harness against the frame, fixed it up and re-routed the wiring harness around the shock, all good. |
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flybd5
Flying Brick Rider
Joined: 01 Jul 2019
Posts: 371
Location: Massachusetts, USA
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| Posted: Wed Jul 22, 2020 9:21 am Post subject: |
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| beemeerr11 wrote: | | Ok so as luck or unlucky would have it, the rear shock (IKON) ceased up. i ordered a YSS replacement, when I went to replace the shock, the rubber eyelet in the top had worn so much it was punching into the wiring harness against the frame, fixed it up and re-routed the wiring harness around the shock, all good. |
Someone must have issued your shock a cease and desist order. LOL! <sorry, couldn't pass up on the opportunity...>
_________________
To err once is human. To do so repeatedly is incompetence.
1995 K1100LT SE |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10085
Location: Bumf***, WA
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| Posted: Wed Jul 22, 2020 12:45 pm Post subject: |
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Glad to hear that you found the short. Fuses are a good thing. 
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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| Back to top |
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beemeerr11
Flying Brick Rider
Joined: 05 Mar 2006
Posts: 168
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| Posted: Wed Jul 22, 2020 8:06 pm Post subject: |
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| flybd5 wrote: | | beemeerr11 wrote: | | Ok so as luck or unlucky would have it, the rear shock (IKON) ceased up. i ordered a YSS replacement, when I went to replace the shock, the rubber eyelet in the top had worn so much it was punching into the wiring harness against the frame, fixed it up and re-routed the wiring harness around the shock, all good. |
Someone must have issued your shock a cease and desist order. LOL! <sorry, couldn't pass up on the opportunity...> |
Don't be sorry we need more fun like this considering what the hell is going on in the world 
Cheers
Lou in Oz |
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