Author Topic: Fuse blowing.  (Read 142 times)

AndyG

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Fuse blowing.
« on: March 17, 2019, 08:49:36 AM »
Fuse blown twice in the last couple of weeks. Tail light,speedo lights go out. Probably a bad earth somewhere. Any place I should be specifically looking ?

Rob B

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Re: Fuse blowing.
« Reply #1 on: March 17, 2019, 03:30:55 PM »
Maybe a dodgy connection or bare wire under the seat tail unit? The wiring looms were actually about two inches too short in this area and further repairs over the years makes them even shorter...
1982 Hesketh V1000    
Laverdas: 1980 Jota     1985 SFC1000
Triumphs: 1994 900 Daytona Super III   1995 900 Sprint
1996 900 Speed Triple 
1999 1200 Daytona Special Edition

Dave Snr

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Re: Fuse blowing.
« Reply #2 on: March 21, 2019, 09:09:37 AM »
I had problems with fuses blowing a few years ago which turned out to be the wiring loom touching the top of the rear cyinder head. Pressure on the seat pushes the rear air box down and the fuse box is attached to the rear air box.
Checking the loom I found it had rubbed through, so I re-insulated and secured it better to the frame.
As Rob says, the loom is a bit tight and of course the engine is a tight fit in the frame which the loom is attached to.
Hope that helps.

Rob B

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Re: Fuse blowing.
« Reply #3 on: March 23, 2019, 08:41:32 AM »
That reminds me of the Vampire I had which PW now has. It ran perfectly until I sat on it, whereupon it stopped. Some head scratching ensued with several HOC members also present, until DH found that the seat pressed down on the loom that runs behind the airbox from the the back of the fuse box. We fixed it "temporarily" with some insulating tape gratefully supplied by another HOC member (forget who) and we continued our run. That was a good ten years ago and I have a feeling the temporary fix might never have been attended to. PW to check maybe?

RB
1982 Hesketh V1000    
Laverdas: 1980 Jota     1985 SFC1000
Triumphs: 1994 900 Daytona Super III   1995 900 Sprint
1996 900 Speed Triple 
1999 1200 Daytona Special Edition