Author Topic: Main fuse blows when I turn the headlights on  (Read 1226 times)

0 Members and 1 Guest are viewing this topic.

Offline yanks8

  • Full Member
  • *
  • Posts: 2
Main fuse blows when I turn the headlights on
« on: May 16, 2015, 06:49:26 AM »
Hello all, I'm new to the forum and currently restoring a '75 CB750k and I'm having a problem with the main fuse blowing when I turn on the headlights. I didnt have that problem until I went to a differant type handle bar and pulled the wires out of the original bars. I feel that I have all wires hooked up correctly and have continuity on on all wires except a black wire coming from the right side. Any thoughts or advice would be really helpful and appreciated.  Thanks Tom

Offline riverfever

  • Master
  • *****
  • Posts: 1,796
Re: Main fuse blows when I turn the headlights on
« Reply #1 on: May 16, 2015, 07:55:16 AM »
Sounds like you have a short somewhere. When I switched to clip on bars I had the same thing happen. Bike would die (because of a blown main fuse) when turning the bar to the right. Finally found a tiny spot in a wire that had been pinched and every time I turned far enough to the right a bit of bare wire would hit the frame and pop that fuse. Look very carefully.
http://forums.sohc4.net/index.php?topic=127186.0

"You wouldn't think that out here...a man could simply run clear...out of country but oh my...oh my...nothing but the light." -Ben Nichols

Offline yanks8

  • Full Member
  • *
  • Posts: 2
Re: Main fuse blows when I turn the headlights on
« Reply #2 on: May 16, 2015, 10:23:48 AM »
Thanks Riverfever I'll check that out

Offline LesterPiglet

  • Old Timer
  • ******
  • Posts: 4,046
  • 1977 CB550F2
Re: Main fuse blows when I turn the headlights on
« Reply #3 on: May 16, 2015, 02:13:04 PM »
Also check your bar switches. I nipped a wire installing mine.
'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional