Author Topic: 1978 cb750  (Read 4953 times)

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Offline lucky

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Re: 1978 cb750
« Reply #25 on: April 07, 2012, 05:18:59 PM »
If the blinker comes on but does not blink just replace the blinker.

Offline 4g3tful

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Re: 1978 cb750
« Reply #26 on: April 07, 2012, 05:46:25 PM »
Just fixed the blinkers. I went ahead and bought a new blinker relay from O'Reilly's for $3 to see if that was the cause. I then read that aftermarket blinkers sometimes have to get super hot for the relay to work properly since the new relay was a thermal one. So the thermal relay didn't work. I just went back to O'Reilly's and bought a electrical relay for $10. The blinkers now blinker properly, but i have to mess with the blinker switch for it to work right. I push the switch to the left then have to tap it back to the right for them to blink. i can deal with that...for now haha. Now I just have to figure out what is up with the brake light. The running light comes on but no brake light when either the handle or pedal are engaged. Any clues??

Offline lucky

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Re: 1978 cb750
« Reply #27 on: April 07, 2012, 06:57:00 PM »
Do you have a Clymer's workshop manual?
It has a wiring diagram and the wires are color coded.


The front switch should have two wires coming from the handlebar switch.
 Do you see those?

The rear brake light switch is near the foot pedal.
You can test the switch with a volt ohm meter on the ohms x 1000 scale.

Offline 4g3tful

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Re: 1978 cb750
« Reply #28 on: April 08, 2012, 07:04:12 PM »
Fixed the tail light. Turns out that 30 years of corrosion will eat up a lightbulb pretty good. Cleaned it up and it worked as advertised.

Offline lucky

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Re: 1978 cb750
« Reply #29 on: April 10, 2012, 04:08:29 PM »
Way to go!!!