SOHC.co.uk Forums > CB350/400
Problem with horn wiring.
Bryanj:
There are two different sets of wiring depending on year and model of bike, need to know both those before answering
Athame57:
You might also want to check out my 'Horn of Death' :o thread on CB400F horn wiring! ;D http://www.sohc.co.uk/index.php/topic,27401.msg254773.html#msg254773
ted_paper:
Bryanj - It is a '77 model with 2 wires that look to be a green and a black.
John - I thought I had a two-pronged bulb to make a simple tester - turns out I haven't so will have to get one at
Halfords! The horn(s) have been tested and they are both working.
Athames57 - Thanks for the link - I've already looked at a thread going back to 2013 which went straight over my head!
Waiting on my lamp tester now.
Thanks
Bryanj:
OK a 77SHOULD have one wire at the horn going to ground and the other supplying power from the switch IF everything is original which it may not be.
To be certain split the LH switch and see how many wires go to the horn button and report back.
Long distance elektrickery diagnosise takes time and patience, by the way you didnt say what 77 bike it was so i am still guessing
ted_paper:
Thanks for feedback.
Grandchildren visiting this weekend so garage time is curtailed until Monday :)
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