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TOPIC: Blowing Main (white) fuse. Help Please? UPDATED

Blowing Main (white) fuse. Help Please? UPDATED 4 years 5 months ago #364536

UPDATE::: Took the bike on a 40mi round trip away from the sleepy foggy town of Pensacola today. I cleaned fuse clips as anarki650 had suggested and viola. Im considering the swap to blade fuses though. Gman was so kind as to give up a pic of what the end product will look like, so thank you thank you thank you for every one who responded. Happy riding every body!


SO.....
I have a 1978 Kz 1000 Drag bike. has 1100 carbs on it. very fast smooth running motorcycle up until a few days ago when it died. no lights would come on and the electric start was DEAD.
Checked the fuses and the white main fuse is blowing. Got a new on in it, rode around for about 20 mins and it blows again. put a new fuse in it, blew after 5 or 6 secs, When i put it in gear. Checked the tail light wires, were raw, so i fixed them.
The main fuse *white* is still blowing. Im sure its a simple fix for you all and hope you guys can help me. i thank you very much and love my bike SOOOOOOO much.
Thanks, Ken - pensacola Florida.
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Last Edit: 4 years 5 months ago by zerokmm.
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364558

  • anarki650
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Check and make sure that the fuse clips are shiny and clean. I had a kz650 that was doing the exact same thing, pulled my hair out chasing shorted wires only to find that my wiring harness was in great repair. Came down to the resistance that was building up from very very light oxidation on the brass clips for the main fuse. Took a wire wheel on my dremel and shined the clips up nice and bright and never had the problem again.
09 Kawasaki ER6n
77 kz650b1 cafe rebirth project
"Being shot out of a cannon will always be better than being squeezed out of a tube, that's why God made fast motorcycles..."
Dr. Hunter S. Thompson
Omaha NE
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364561

  • timebomb33
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if it is blowing the main fuse i would be looking for a bare wire making contact with the frame or engine some where for it to keep blowing the main fuse out it would have to be a major short some where do you have any wiring down by the shifter that could be rubbing on the frame or engine also do you have the stock harness or does have a simplified smaller custom built one since your drag racing it.
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364570

  • TeK9iNe
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Here's your wiring diagram.

Follow the lines...

http://kzrider.com/index.php?option=com_docman&task=cat_view&gid=114&Itemid=108

Good Luck!

B)
Motorcycle Shop Owner/Operator

79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors ;)
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364571

Thank you Anarki. this will be the first thing i do and ill get back with you guys for sure.
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364574

Thanks for the Diagram... wow. ill be scratching my head after i print this sucker out haha
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364576

timebomb33 wrote:
if it is blowing the main fuse i would be looking for a bare wire making contact with the frame or engine some where for it to keep blowing the main fuse out it would have to be a major short some where do you have any wiring down by the shifter that could be rubbing on the frame or engine also do you have the stock harness or does have a simplified smaller custom built one since your drag racing it.

Not much else is custom other then the stretch.
ill look for it tomarrow down by the shifter. its raining right now! ugh. stupid rain. thanks, ill look and get back with you guys.
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364609

  • anyday
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You might want to check under the seat too. I had the same problem and found the main ignition wire (white) and one of my orange signal leads were crushed in the seat latch mechanism and were shorting on each other and the frame.
1981 KZ 1000-k, 1982 GS300L-D, 1982 GS300L-Z (parts)

Sioux City, IA
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364650

  • Gman
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I had the same problem on my '78. Chased it for a long time. Finally swiched to mini-blade fuses. End of problem. It can indeed be caused by poor contact in the fuse box holders. If you check on a lot of these bike the main fuse will be too hot to touch while the bike is running even if the fuse doesn't blow. With the mini-blades, I feel no heat. Good luck.
1978 KZ1000
1965 Harly Electra Glide
2002 Gold Wing
1974 Z1 900 project
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364722

  • anyday
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Where did you purchase that fuse block? I've been intending on doing to switch over to spade fuses too.
1981 KZ 1000-k, 1982 GS300L-D, 1982 GS300L-Z (parts)

Sioux City, IA
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364728

  • Kawickrice
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I taced mine to the headlight bucket. There are a bunch of wires that connect in there.

Welcome to KZR

My brother lives in Pensacola too
73 Kawasaki Z1
82 Suzuki GS 1100
74 Yamaha RD 350 (My two stroke toy)
77 Kawasaki KZ 650B-1 (My putt around bike)
80 Indian Moped (My American Iron)
1
Long Gone
75 Suzuki GT550
74 GT 380
79 RD 400 Daytona Special
72 Honda CL 175
74 Honda QA 50
73 Honda Trail 90
Tampa FL
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364736

Gman wrote:
I had the same problem on my '78. Chased it for a long time. Finally swiched to mini-blade fuses. End of problem. It can indeed be caused by poor contact in the fuse box holders. If you check on a lot of these bike the main fuse will be too hot to touch while the bike is running even if the fuse doesn't blow. With the mini-blades, I feel no heat. Good luck.


I took it out to day after roughing up the leads. ran okay for about five blocks before i circled home. The fuse is extremely hot to the touch. I to would like to know where you got your Mini Blade box at. any tips on tackling this sucker? (traced most all the main wires, don't seem to be the problem...)
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364739

Hey. Hope your brother is ready for some Oil on the beach. I heard if it hits Destin, it will be so toxic, people will have to evacuate from all the fumes. >...... AAAANY ways.
..
ill check the head light right now. this could very well be the problem aside from my fuse leads possibly being corroded. thank you and every one else for the quick responses. B)
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364740

  • anarki650
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I did the blade fuse conversion on one of my 650s, IIRC I ordered the block from Parts Unlimited, was something like $10. I just soldered the wires from a stock fuse block onto the blade connection points and was good to go. There are more expensive ones out there if you search for them, a lot of marine applications so you might check a boating supply source if you're looking to spend more money.
09 Kawasaki ER6n
77 kz650b1 cafe rebirth project
"Being shot out of a cannon will always be better than being squeezed out of a tube, that's why God made fast motorcycles..."
Dr. Hunter S. Thompson
Omaha NE
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364745

  • MFolks
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1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #364906

  • Gman
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Picture_015__Small_.jpg
I wanted to keep mine stock-looking so I grafted 3 individual fuse holders into the stock fuse box. It was a pretty tight fit. If I remember right, I got everything I needed at Radio Shack. It's been about 10 yrs since I did mine.
1978 KZ1000
1965 Harly Electra Glide
2002 Gold Wing
1974 Z1 900 project
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Blowing Main (white) fuse. Help Please? 4 years 5 months ago #365067

Gman wrote:
I wanted to keep mine stock-looking so I grafted 3 individual fuse holders into the stock fuse box. It was a pretty tight fit. If I remember right, I got everything I needed at Radio Shack. It's been about 10 yrs since I did mine.
Hey Gman. thanks for the cool pic. i think i could handle this.
:)
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