Author Topic: replacing a headlight on my cb750  (Read 1893 times)

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Offline nowhere_fast

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replacing a headlight on my cb750
« on: August 04, 2011, 09:10:28 AM »
I recently replaced the 7" headlight on my cb750 with a smaller light off of a cb175.  The bulb is a 12v 35/25w sealed bulb. It blew last night on my way home.. is it just a bad bulb or did it blow because the wattage was lower??

Offline tlbranth

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Re: replacing a headlight on my cb750
« Reply #1 on: August 04, 2011, 09:16:35 AM »
It's not because of the wattage
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1970 CB750 K0
1975 GL1000
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Offline nowhere_fast

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Re: replacing a headlight on my cb750
« Reply #2 on: August 04, 2011, 09:27:09 AM »
when i installed it, it was incredibly bright.. was this an indication that it was on its way out? haha or could i have possibly wired something wrong? i mean its only 3 wires i cant imagine something went wrong there

bollingball

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Re: replacing a headlight on my cb750
« Reply #3 on: August 04, 2011, 09:30:55 AM »
I have seen bulbs get brighter just before failure. Did low and high fail?

Offline nowhere_fast

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Re: replacing a headlight on my cb750
« Reply #4 on: August 04, 2011, 10:49:53 AM »
yeah the low failed then i used the high to get home and that failed as well after about 15 minutes

bollingball

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Re: replacing a headlight on my cb750
« Reply #5 on: August 04, 2011, 11:16:03 AM »
That is strange I would be looking for a loose connection at the plug at rear of bulb and the bullets then the Sw.every thing should be clean and tight. and coated with dielectric grease.

Offline tlbranth

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Re: replacing a headlight on my cb750
« Reply #6 on: August 04, 2011, 01:44:59 PM »
Sounds like either your voltage is way high or it's a 6 volt lamp
Don't own a Vanagon
Don't work at Boeing
Life is good

1970 CB750 K0
1975 GL1000
1999 GL1500
2002 VT750-CDA ACE - Momma's bike
Terry

Offline excerpt

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Re: replacing a headlight on my cb750
« Reply #7 on: August 04, 2011, 02:07:49 PM »
I have an extra tribar headlight (with blue jewel in the middle), and an extra visor (with blue jewel on top) I'll sell ya.
$50

Offline nowhere_fast

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Re: replacing a headlight on my cb750
« Reply #8 on: August 04, 2011, 09:50:20 PM »
the bulb itself is a 12v which is why i was really confused as to why it blew.. i mean it was off a really ratty cb175 so thats probably why haha.. its a 5" bulb which sucks because i wish i could just put a 5 3/4" bulb in, but nope, i had to do things the difficult way.. im gonna order a new one on ebay and cross my fingers.. if it blows again the giant 7" is going back on.. to my dismay.
« Last Edit: August 04, 2011, 09:54:22 PM by nowhere_fast »

bollingball

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Re: replacing a headlight on my cb750
« Reply #9 on: August 05, 2011, 04:33:08 AM »
Are you saying the seven " works OK

Offline nowhere_fast

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Re: replacing a headlight on my cb750
« Reply #10 on: August 05, 2011, 09:14:38 AM »
yeah i just like the look of the 5" better