I have an old 1986 CG125 6V motorcycle that needs patches/extensions to the current wiring loom. What gauge wires do I need to use (amps and thickness)? I have the Haynes Manual but cannot find the details of this anywhere. My Wiring is the same on Page 103 for Early Honda CG125 models.

  • Same gauge as the wires you are patching. – Moab May 30 '18 at 23:06
  • Fantastic answer @Moab. Now how do I find out what they are? – WillNZ May 30 '18 at 23:14
  • If I was there and could eyeball them and I could tell you. Most automotive wiring is 18,16,14,12 or 10 gauge, larger the number the smaller the wire inside the insulation. By the way it was not an answer, its a comment. Answer would be in the answer box. – Moab May 31 '18 at 1:25
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    Strip back some insulation on the wire you wish to extend - count the strands and pick up a similar replacement - experience will enable you to get the correct one most times before stripping it... – Solar Mike May 31 '18 at 4:50

Get a set of wire ferrules. Strip back some insulation and use the ferrules as a gauge to measure the thickness of the conductor.

Buy automotive grade wires. In doubt use some slightly larger diameter.

  • Also match the style. Meaning stranded vs solid. (Almost all the wires probably are stranded. ) – kyle_engineer May 31 '18 at 23:38

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