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Good Morning,
Brand new to this bike, but have worked on a ton of older 6 volt cars where you want thicker gauge battery cables than those easily purchased for a 12 volt system.

What gauge is best for this 6 Volt bike?

Thank you,
Justin
 

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Seeing as the main fuse for that bike is 20 Amps, 12 gauge should be sufficient. If you have 10 ga. that'll work too. 14 ga. is too small.
 

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After a little research it appears the 1980 model CM200 is a 6 volt system, while the 1981-82 models are 12 volt. I found a 6v battery listed online that is rated for 98 cold cranking amps. I would recommend 4 gauge stranded wire good for 105 amps at temps of 60C/140F.
 

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Fuse is irrelevant, cables must carry sufficient amperage to run the starter motor which is not fused. Can't find a spec in the parts fiche but, if you follow Scramblr's advice you won't go wrong.
 

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Strange that nobody had an opinion on this...
The heavier wire would be no problem on a 12-volt, other than an over-design - Honda probably had a zilllion of them in stock............
 
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