I have installed a relay on a golf cart to make the brake lights only work with the key in the run position. Now when you drive the cart and come to a stop the starter stays engaged. to trigger the relay I'm using the ground from the ignition switch to the #85 position on the relay. what seems to be happening is once you start driving the cart and stop, the starter motor is staying engaged unless, I shut the ignition switch off. Normally when you stop the starter does not re-engage until you step on the accelerator pedal again! this is an issue with all carts I have tried this on, that have an old starter solenoid on them and has to do with the ground to the relay.