Hi folks, I am currently trying to restore a worse for wear Jianshe JS250. The original wiring loom was a "Frankenstein" affair and the headlights, indicators and horn are all missing so I bought a replacement loom but unfortunately, many of the wire colours do not match. I will attach photos to show these. The instrument panel works and the gear position indicator works and will show all the gears, including neutral. It will not show reverse unless I earth the green/yellow directly to the frame so that could be a faulty sensor. The bike will start and stop with the pullcord but I cannot get the electric stater to work unless I bridge the solenoid terminals. I have downloaded the workshop manual but the colours there do not match the new loom either and the supplier say's that Jianshe have confirmed it's correct but neither they, or Yamaha have replied to my emails. Sorry for such a long post but I don't need any lights etc to work, I just want the damn thing to start on the button!! Pics attached with more to follow, please HELP!!

 

Sorry Admin, have just noticed I have posted this in the wrong place. Could you please move it to Problems area, sorry again,

cheers, crofter

 

More pics!!








This is part of the old loom and was connected to a fuel cut off relay.

This is part of the old loom and was connected to a fuel cut off relay.

 

So the main problem is the starter won't work "on the button"? Looks like some of the new loom is following Honda wiring colours whereas Jianshe may have used Yamaha colours? Anyway guessing thin red from solenoid will be a live for ignition, yellow/red will be pos when start button is pressed, so green/yellow will be earth. Either of these may go through safety lockouts. So check if the green/yellow is earthed with brake on and in neutral, note you do have a green/yellow "dangler" in the last of your first lot of pics. If the green/yellow is showing earth at the solenoid, check the yellow/red does go to the start button and that the button is getting pos power when the ign is on.

 

Thanks Merryman. Yes, non electric start is the issue. It's just for use on my farm so doesn't need anything else!! The green/yellow from the solenoid shows continuity with the one on the "dangler" so I think it might be for the rear brake switch. It doesn't have continuity with the same coloured front "dangler" which I thought might be for the front brake!! The yellow/red changes to a purple/red at a connector and leads to the start button, .along with a black. I will try to see if I can get power to the small red on the solenoid today.
I had downloaded the Yamaha 250 atv wiring diagrams plus the Jianshe 250, plus the 125 bike ones but they are no help!!

 

So.... There is power to the small red on the solenoid and the green/yellow shows continuity with the green/yellow on the "dangler". There is no power to the yellow/red. It has continuity with the purple/red at the start button and the black has continuity when the button is depressed. However, there is no power. I have attached a couple of pics of the inside of the switch unit. There is power to the lights and horn switches but nothing connects to the purple/red. DOH!! I am really confused....

 

Black should be live from ign switch. Press start button and power should go to red/blue, onwards to the yellow/red and the solenoid. You need that green/yellow at the solenoid to be earthed. Probable it was connected to a lock-out, but earth it and solenoid should work. That thin red on the solenoid is permanently live as it connects to the fuse which connects to the thick red from the battery. The "too clever by half" idea is a combined main fuse and solenoid. Both Suzuki and Yamaha are keen on that set up.

 

Perfect, thank you. The black is not live so there must be a break somewhere. Is there any risk of damaging the system if I splice the black with the pink from the horn?

 

I mean't to add as a temporary measure until I get a new switch assembly ordered!!

 

I mean't to add as a temporary measure until I get a new switch assembly ordered!!