Can you install a microswitch on the parking brake? Whenever the parking brake (not service brake) is engaged, the circuit will be interrupted and the light will be off.
How about a buzzer that sounds if the cart ignition is on, but the engine isn't running. I recall a Cushman cart at a driving range that operated in a similar manner...
Solve the interference issue and just use the key?
I suspect a relay control side triggered by the key and the load side run straight off the battery would be just fine.
In reply to Giant Purple Snorklewacker:
914Driver wrote: I put an on/off switch to the light, it has no power when the key is off. People hop in, do the chore and hop out; sometimes leaving the key on. Light is rotating .....
Toyman01 wrote: This for under $17 and done.http://www.amazon.com/Intermatic-FF60MC-60-Minute-Spring-Brushed/dp/B00004W4WZ/ref=sr_1_3?ie=UTF8&qid=1414971004&sr=8-3&keywords=wind+up+timer+switch
Not sure if you were thinking of it for the light or in place of the key...
But if the key was replaced with the timer then it would solve the problem and ensure they turned on the timer.
moparman76_69 wrote: In reply to Giant Purple Snorklewacker:914Driver wrote: I put an on/off switch to the light, it has no power when the key is off. People hop in, do the chore and hop out; sometimes leaving the key on. Light is rotating .....
So why feed the light and the rotator separately? Why not power the motor off the same circuit or arrangement that the actual light is using?
Headlight or generic 12V Delay Off timer
http://www.ebay.com/itm/SMALL-TIMER-SWITCH-10A-Delay-Off-12V-TIME-RELAY-FROM-1-TO-40-90-145-430-660-SEC-/320852799879
http://www.wolstentech.com/products/timedelayrelay/basic-instructions.php
In reply to Duke:
I think what he means there is despite there being a freaking spinning light on top of the cart indicating they left the key on, they are still leaving the key on.
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