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05-14-2005, 12:07 AM
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#1 |
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Senior Member
Join Date: May 2004
Location: Caldwell,Tx.
Posts: 3,648
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Tach dash question
I have a tach dash from a 1980 one ton 454 truck . I was going to use this in my 77 because I like the look of these gauges better but have decided to use a 77 gauge panel instead . I have a question . There is a resistor ??? ( looks like a conderser for a points type distributor )or something that plugged into the distributor , mounted to the firewall , and then hooked to the tach wire . What is this part used for . I have seen tach dashes where the wire runs from the tach straight to the distributor . Just curious about this one part . Frank
Last edited by f.monroe; 05-14-2005 at 12:08 AM. |
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05-14-2005, 01:20 AM
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#2 |
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Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
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I'm not sure exactly what it does, but there is no harm in leaving it there. My tach does not have one hooked up to it though...
__________________
1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
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05-14-2005, 01:26 AM
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#3 |
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Registered User
Join Date: Dec 2004
Location: New Lenox, IL
Posts: 442
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I think it is a capacitor that keeps your tach from jumping around when voltage is used. For example, I put in a full set of factory gauges in my 87 monte carlo and ran a wire strait from the negative terminal of the coil up to the connector. When I would use my turn signal or hit the brakes at idle, the tach would bounce up about 100 RPM or so when the turn signal blinked.
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05-15-2005, 10:51 AM
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#4 |
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Registered User
Join Date: Feb 2004
Location: Hodgenville, Ky
Posts: 735
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jermasaurus is correct, it is a tach filter. Used to eliminate any "high frequency" noise from causing erratic tach operation.
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