6 Volt Wiring

V2V4V8 · 2009-10-11T21:39:37+01:00

What to do? The original loom from my 1971 ST50 is now nearly 40 year old. It has deteriorated and corroded. The outer sheathing has split, and an inital inspection shows that one of the rectifier wires is down to the copper, perhaps the sign of an earlier overload? The previous owner told me that the ignition switch had failed and the bike had been "hotwired". The bike has not run for 28 years. Experience tells me that there is usually a reason why a bike is taken off the road in the first place. It is then that before you know it the best intentions to fix it ends up in an ebay sale 28 years later! I now strongly suspect that my bike had electrical problems 28 years ago and that this is the underlying reason that it has not run since. My first choice was replacement wiring loom. A call to David Silver informs me "not available". I can't say that I am suprised but what now? Option 1: I repair the existing loom myself using parts available from Vehicle Wiring Products Ltd. Option 2: I have the existing loom professionally rebuilt. Option 3: I see if I can find a non-genuine replacement loom. Option 4: I convert the bike to 12 volt electrics From my perspective each of the above has pros & cons. I am happy to share these if anyone is interested? I expect that this is a dilema/situation that many of you have faced and I would welcome your thoughts and comments.

Started by V2V4V8 · 14 replies · 32868 views

richbayStandard MemberPosts: 1
Joined: Oct 2009

Re: 6 Volt WiringWed Oct 14, 2009 1:10 pm

i am just about to pick up my 1978 st70, the first thing i would like to do is to change from 6v to 12v and fit some indicators, above waynus says
'The easiest and cheapest way is to fit a 12v Jingcheng ignition. (6v crank fitting, 12v output) or an expensive (but performance) solution is a Kitaco,... 12v rotor (again, for a 6v crank)
This can only be done if you have an L-type crank!!! (so no Hitachi ignition systems! Because you'll have to place a conversion part over your crank)
Also, you can fit in a 12v maintance-free battery + LED/halogen bulbs with higher outpot and longer lifespan.'

does anyone have any instructions on how to do this? is it easy? what do i need?
please bear with me im a mechanical engineer and electrics are not my thing (yet)

WaynusModeratorPosts: 1108
Joined: Feb 2009

Re: 6 Volt WiringWed Oct 14, 2009 3:02 pm

Altough the schematics below are written in Dutch, they could be very helpfull.

churches2367Standard MemberPosts: 5
Joined: Apr 2010

6volt to 12 volt dax?Sun Apr 04, 2010 10:57 pm

Is it possible to convert a 6 volt dax into a 12 volt?.
Thanks Ian

WaynusModeratorPosts: 1108
Joined: Feb 2009

Re: 6volt to 12 volt dax?Tue Apr 06, 2010 8:01 am

With the right basic electrical knowledge and some money: yep, possible.
Lots of info can be found on this forum. (I will look up the topic and move this one)

churches2367Standard MemberPosts: 5
Joined: Apr 2010

Re: 6 Volt WiringTue Apr 06, 2010 8:45 am

Cheers thanks ,cant wait to read that.
Cheers Ian

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