Where do these wires go on my '81 Jota?

N

Nick

Full member
Almost wired the Jota but can't see where a couple of wires connect.
The red/white wires are for the ballist resistors (which won't be used as I have an IIS to install) but coming out of the same piece of harness is a red/green wire (not the neutral light that's another wire and this green/white one. Any ideas?
Nick 🙂
 

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I'm assuming yours is a series 2 machine with ND alternator.
Green/white is from the alternator. It allows output from the third coil to be switched through the headlight switch back to the reg/rect via the red/green. This was to avoid overstressing the original reg/rect which can't handle full alternator output unless some load is taken by the lights being switched on. A known weak point over time when connections corrode and go high resistance resulting in melted insulation.

I can't see clearly what crimp is on the green/white. The original (small) multiway connector pin may have been replaced with a bullet? In which case, connecting the two wires together will bypass the light switch and apply full alternator output to the reg/rect. Fine if the reg/rect has been replaced with an upgraded component, otherwise keep your headlight on!
 
Hi Rob,
Sorry for the delaying in saying 'thanks'. I intend to connect the wires to the reg/rect rather than put them together.
Bit of a nightmare trying to put the standard loom on the frame neatly! I can see how using modern lighter wire is a good idea!
Nick :-)
 
No problem Nick, but I think you'll find that the red/green is already connected to the reg/rect. It changes to red/white via a bullet connector somewhere around the battery /airbox. That's why I suggested using it to take the alternator output on the green/white wire direct to the reg/rect. If you look at the wiring diagram you'll see what I mean. There's one in the library
https://www.laverdaforum.com/xf/resources/96/

In these current cold temps I use a hot air gun to help manipulate an old harness by gently warming it. Helps a lot, as well as keeping fingers warm :)
 
Gee Rob, talk about on the money, impressive.... 100% correct and useful tips, clever is just plain clever, grin. Nick, IIS black single wire from module connector, directly connected to battery negative terminal, say it all the same though you will know already, low resistance path for the IIS return current. Hope it all goes well, new email address for IIS support iismail@aussiebroad.com.au j.
 
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