Reply To: No spark – GT250 Carby
EFI GT250R and Carb GT250Looking into this yellow thing a bit more… Since I’m getting continuity from the yellow thing to the horn plugs, it makes me think it has something to do with the horn. Doing a random ‘bike horn capacitor’ google search, I think it might be a ‘3-pin alarm boost inductor’ for the horn.
It’s a little hard to see in my photo earlier in the thread with the yellow thing circled, but I think the diodes are orientated in the direction of one ‘in’, and one ‘out’. Im thinking that the ‘in’ diode would allow a signal from the CDI to come ‘in’ and prevent a ‘boosted’ signal heading back to the CDI and blowing it. The ‘boosted’ signal would then go through the ‘out’ diode to the horn – I’m no electrician, this is just my loose understanding of diodes.
When I’m next in the shed, I’ll take the horn off my new “parts bike” plug it into the black plugs and see what happens when I unplug the yellow thing from its connector.