Tach Help
03-24-2008, 07:23 AM
#1
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Tach Help
I am trying to get my tach to work with my diesel swap. I have used a prox sensor to trigger a relay to pulse a +12 signal to the black wire comming out of the ignition modual on the fender. No workie.
The original gauge cluster was from a basic guage package, just speedo and dumby lights. There was only 1 wire that was missing from this harness so I hooked one up to it. I tryed on this wire with still no luck.
My other guages are working so it is not a fuse, I don't think? What am I not doing right....................
The original gauge cluster was from a basic guage package, just speedo and dumby lights. There was only 1 wire that was missing from this harness so I hooked one up to it. I tryed on this wire with still no luck.
My other guages are working so it is not a fuse, I don't think? What am I not doing right....................
03-24-2008, 08:52 AM
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Sensors
As I understand it a tach signal is a digital signal and possibly AC also. Using an analog prox won't give you what you are after. Why not rob the parts from a distributor and use it as you are using the prox. sensor. Then there would be no doubt on getting the right signal.
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