Tridentperu

Thanks for the pointers, and I fully accept that a separate battery powered/ pushbike lights/ led system would be better, and that the original 6v ac lights are crap. But, I just wanted to have some form of illumination if needed. Anyway, my relay idea was great in theory but didn't work in practice....It hadn't dawned on me that the relay needed dc to function correctly! So, I have just gone for a separate toggle switch for the rear light and the headlight is operated through the main switch. Not perfect but it does give me the option of just having the rear light on if I want - the rear light runs off the yellow wire. I did try and run the horn off that, but it didn't produce enough power. All done now and working

Hi, I have finally got this worked out. Turns out the manual and wiring diagram are a bit misleading... Black - Ign coil and condensor and kill switch Pink - Stop light, but it is important to use the correct 15w 6v bulb or it will blow all the time if you use a lower wattage bulb. You could get away with a bit higher wattage but it won't be as bright. Yellow - rear light only - this is a very low powered coil (which is what threw me initially) and will pretty much only light a 5w bulb - Green - Horn and then to feed lighting on /off /dipswitch/headlamp. I got around the need for the special montesa light switch by using a feed from my regular cheap lighting switch to a relay which switches the rear light (yellow wire) circuit in when required. Using a relay means the two circuits do not cross over, which will kill the motor! It is important to use each wire as designed, as yes they are all 6v, but they are all different power and the particular load applied to the coil is what makes it work properly hope this helps Jim

I have a wiring diagram if it helps - but not of the exact switch layout which is where it gets trickier

Hi, I'm having the same problem... It's not as simple as it first seems as the flywheel magneto arrangement relies on switch contacts to work properly. Ignition is the easy bit, it's the black wire to the coil and then to a kill switch which earths it out and everything stops. The complication comes with the other three. Green and yellow are for the horn and main lights/ and pink for the stop light. The problem is the green and yellow are only joined together when the lights are required. The green one provides power for the horn all the time but also feeds the lights when required, with the yellow one coming into play and providing the extra power required as the green can't do both ( I know this!) Unfortunately I can't seem to achieve this with a normal power / on off / dip switch - so I am probably going to have to buy the correct lighting switch from Spain to get it all to work properly. ( Gorelli L1050 p/n ) It's an AC system not a simple DC system as found on road bikes with a battery....which is where I was coming from...and it didn't work properly! This is as far as I understand it - if someone can steps in and put me straight - feel free!! If you have sorted yours, please let me know how.... Jim