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#1
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Tachometer leads
Hey guys - Trying to see if this tach works. Unsure of the leads. One from the coil to the insulated lug on the back? Are one of the other 2 nuts to provide a ground connection? FWIW: Case has a very faint stamp: 12v 8 cyl. Thanks !
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#2
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Yes. Lug attaches to minus side of coil
Case can be grounded anywhere convenient Sent from my SM-T817V using Tapatalk |
#3
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Thanks for your reply
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#4
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Just FYI, that tach was designed to read off of a points distributor. It will not work or read accurately off of anything modern such as GM-HEI or pertronix.
If you wire it to something fully electronic and/ or modern it will likely damage the circuit board. If the pointer moves at all, it will be off by as much as 300 up to 900 RPM, (the error increases with the revs.)
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Peter Serio Owner, Precision Pontiac |
#5
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Hooked it up to the Goat w/points, no movement. More stuff to the grim (recycle) reaper
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#6
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Sent PM about possible path to repair. Forum member george kujanski sent me a schematic many years ago (I'm still grateful!) and I was able to get my tach working by replacing the original circuit board with a home-wired.
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