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

[jpcjguy]

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:


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.

[Mayito88]

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.