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Chad E532 · 06-09-2011, 12:05 PM

When the tach goes from 12 volts to 0 volts it will start recording. I have it wired to the line lock button but have a separate "arm" switch in the circuit that I activate after the burn out to allow the blue wire to see the 12 volt signal from the line lock circuit on the starting line. When I let go of the line lock button and the voltage drops to zero the tach starts recording.

Chad

06-09-2011, 12:05 PM	#2
Chad E532 Member Join Date: Jul 2008 Location: Lindstrom MN Posts: 156 Likes: 7 Liked 54 Times in 7 Posts	Re: tach wiring question When the tach goes from 12 volts to 0 volts it will start recording. I have it wired to the line lock button but have a separate "arm" switch in the circuit that I activate after the burn out to allow the blue wire to see the 12 volt signal from the line lock circuit on the starting line. When I let go of the line lock button and the voltage drops to zero the tach starts recording. Chad