Kill Switch
06-11-2006 | 07:38 PM
#1
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From: Gladstone,
MO
Kill Switch
Hi,
I bought a used Q35 with spring starter and original coil / magneto ignition. The coil has the sparkplug wire coming from it and one spade terminal. I assumed the spade terminal if taken to ground would kill the ignition. I wired in a on/off switch between the spade terminal and the engine case. In checking the electrical continuity to determine the on vs off position of the switch, I find that this terminal is already grounded to the case. I assume internally. The switch does not break continuity. Take the switch completely out and it changes nothing.
What am I missing here? Is the coil shorted internally? Did I assume incorrectly that the spade terminal was to be used for a kill switch? Help!
Bill
I bought a used Q35 with spring starter and original coil / magneto ignition. The coil has the sparkplug wire coming from it and one spade terminal. I assumed the spade terminal if taken to ground would kill the ignition. I wired in a on/off switch between the spade terminal and the engine case. In checking the electrical continuity to determine the on vs off position of the switch, I find that this terminal is already grounded to the case. I assume internally. The switch does not break continuity. Take the switch completely out and it changes nothing.
What am I missing here? Is the coil shorted internally? Did I assume incorrectly that the spade terminal was to be used for a kill switch? Help!
Bill
06-12-2006 | 06:46 AM
#2
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From: Houston, TX
RE: Kill Switch
mackey1,
Don't concern yourself too much with a continuity test. I did the same thing with one of mine and got what I thought was a strange result too. Those coils are nearly bulletproof. Continue as you have been going, you are on the right track.
Have fun!
Bedford
Don't concern yourself too much with a continuity test. I did the same thing with one of mine and got what I thought was a strange result too. Those coils are nearly bulletproof. Continue as you have been going, you are on the right track.
Have fun!
Bedford
06-12-2006 | 07:56 AM
#3
Senior Member
RE: Kill Switch
ORIGINAL: mackey1
Hi,
I bought a used Q35 with spring starter and original coil / magneto ignition. The coil has the sparkplug wire coming from it and one spade terminal. I assumed the spade terminal if taken to ground would kill the ignition. I wired in a on/off switch between the spade terminal and the engine case. In checking the electrical continuity to determine the on vs off position of the switch, I find that this terminal is already grounded to the case. I assume internally. The switch does not break continuity. Take the switch completely out and it changes nothing.
What am I missing here? Is the coil shorted internally? Did I assume incorrectly that the spade terminal was to be used for a kill switch? Help!
Bill
Hi,
I bought a used Q35 with spring starter and original coil / magneto ignition. The coil has the sparkplug wire coming from it and one spade terminal. I assumed the spade terminal if taken to ground would kill the ignition. I wired in a on/off switch between the spade terminal and the engine case. In checking the electrical continuity to determine the on vs off position of the switch, I find that this terminal is already grounded to the case. I assume internally. The switch does not break continuity. Take the switch completely out and it changes nothing.
What am I missing here? Is the coil shorted internally? Did I assume incorrectly that the spade terminal was to be used for a kill switch? Help!
Bill
You have turned theoretical on us and probably haven’t grounded the coil with the engine running.
The coil has very fine wire with only a few ohm resistance. A continuity test is not definitive.
Bill
