kandi 150cc - help needed figuring out why no key start
 

Hi all,

So I am putting back together a Kandi 150GKA-2 that I picked up recently. I can get it to start by jumping the solenoid but not with the key. The ignition switch is good and when in the start position - I have 12v going to the starter solenoid (brand new and is good).
It appears that there is no "ground" on the other side of the starter solenoid. I traced the wire and it goes to a standard relay. I tested the relay and it is good. I hear the click. I don't know what the function of that relay is though.
Here is the supposed circuit diagram from the kandi website:
http://www.kandiusa.com/upload/month_1308/KD150GKA2.jpg

Is this a "ground" based setup? Could it be that I am not supplying 12v to the starter solenoid with the key in position 3 but actually providing the ground to complete the circuit? In the pic, on the left side there is a cut off switch which appears coming from a relay (labeled "engine start stuff") - I don't see a kill switch on the buggy. I wonder if the previous owner messed with something?
Electrical is not my strong suit so any help would be great.

Looks like your problem is going to be the brake switch... Try bypassing the 2 wires that connect the switch on the master cylinder(brake) and try to turn it on. If that works just replace the switch.