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Voltage to ignition

Points Based Ignition | Electronic Ignition Upgrade
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bootleggerjim
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Joined: Wed Oct 29, 2014 9:20 am
Location: SC coast

Voltage to ignition

Post by bootleggerjim » Sun Sep 08, 2024 6:32 pm

What is the correct voltage going to the ignition.....is it 12 volts or less....much thanks guys............

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Tim Allman
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Location: Guelph, Ontario, Canada

Re: Voltage to ignition

Post by Tim Allman » Mon Sep 09, 2024 10:18 am

The whole electrical system is a nominal 12V system. However, a fully charged lead-acid cell has a nominal voltage of 2.1V so measuring the voltage on a new fully charged battery will show 6x2.1=12.6V. The charging system should push this up to about 14V in order to keep the battery charged although the CB/CL/C/CA/72/77 systems struggle to do this.

Why do you ask?

bootleggerjim
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Posts: 13
Joined: Wed Oct 29, 2014 9:20 am
Location: SC coast

Re: Voltage to ignition

Post by bootleggerjim » Mon Sep 09, 2024 1:29 pm

The bike I'm working on had the handle bar wires cut...I had to replace the controls with aftermarket ones....there is a black wire with a red strip forward that shows around 8 volts..the other hot ones are 12 volts. ..I didn't know if that wire was going through a resistor for the points......

deuce_7
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Location: California Central Coast

Re: Voltage to ignition

Post by deuce_7 » Mon Sep 09, 2024 4:20 pm

What year / model bike?

If you’re interested in acquiring reconditioned Honda handlebar controls, please contact me.
1967 CL77 305 Scrambler

bootleggerjim
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Posts: 13
Joined: Wed Oct 29, 2014 9:20 am
Location: SC coast

Re: Voltage to ignition

Post by bootleggerjim » Mon Sep 09, 2024 5:38 pm

1964 CB77......

bootleggerjim
honda305.com Member
Posts: 13
Joined: Wed Oct 29, 2014 9:20 am
Location: SC coast

Re: Voltage to ignition

Post by bootleggerjim » Tue Sep 10, 2024 7:21 am

Thank you

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