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Author Topic: Electrical Help  (Read 1392 times)

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Hyseman

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Electrical Help
« on: July 24, 2006, 07:15:51 AM »
My 73 CB750 has a problem, I went to start the bike up after about 2 weeks of rain here in Ohio. The starter turned over and all of a sudden nothing. No lights, horn or anything. I checked the fuses and I did have one burnt out the one on the bottom. I replaced it with one from the other 2 and still nothing. Does fuses need to be in all 3 or are 2 of them just holders? What size fuses do I need to have or do I have another problem? Note I am a rookie at this bike stuff.
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Offline TwoTired

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Re: Electrical Help
« Reply #1 on: July 24, 2006, 09:32:47 AM »
You have 3 fuses. Headlight; 7A, tail light; 5A , Main; 15A.
The head and tail light fuses are sourced power from the main fuse.
Without a good main fuse installed, there will be no power distribution.

Look at the end caps of the fuses.  Scribed there are numbers indicating fuse rating.

Check out the thread in this forum "WTF fusebox melted", to reduce problems in this area.

Cheers,
« Last Edit: July 26, 2006, 09:25:45 AM by TwoTired »
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Jonesy

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Re: Electrical Help
« Reply #2 on: July 26, 2006, 04:54:48 AM »
Actually, on the '73 750 the tail light fuse is specified as a 5 Amp... :)

(The didn't change it to 7 Amp until a few years later)

The spare fuses are in a rubber holder inside the fuse box cover.
« Last Edit: July 26, 2006, 04:56:22 AM by Jonesy »
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"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen

Offline TwoTired

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Re: Electrical Help
« Reply #3 on: July 26, 2006, 09:30:20 AM »
Like I said, 5A.  Okay, I edited the post.  :P

Jonesy's quite right.  I was just testing to see if anyone was reading?

...right...

Cheers,
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline dusterdude

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Re: Electrical Help
« Reply #4 on: July 26, 2006, 01:03:14 PM »
yea,we know. ;D
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mark
1972 k1 750
1949 fl panhead
1 1/2 gl1100 goldwings
1998 cbr600 f3

Offline Jonesy

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Re: Electrical Help
« Reply #5 on: July 26, 2006, 07:26:43 PM »
Just keepin' ya honest, TT... ;)
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"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen
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