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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Dash Gauges help

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Old Apr 14, 2013 | 08:26 PM
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Dash Gauges help

can someone tell me what this piece is that is attached to the oil/temp/battery/fuel gauge? are they some sort of circuits? i cannot find the answer for the life of me!!!

 
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Old Apr 14, 2013 | 08:48 PM
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Yes, they are circuits - Shop Manual - page 278 & 279
 
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Old Apr 14, 2013 | 09:26 PM
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Originally Posted by FortyNiner
Yes, they are circuits - Shop Manual - page 278 & 279

thanks niner. i must have missed those pages in the book!
 
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Old Apr 15, 2013 | 04:07 AM
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those are your circut breakers.
 
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Old Apr 16, 2013 | 08:37 AM
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instrument cluster

they are instrument cluster constant voltage regulators
its job is to feed a constant stream of lowered voltage to your gauges '
when it fails the voltage is allowed to increase and all your needles are pegged to the right so say mac's antique auto parts #1spudman
 
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Old Apr 16, 2013 | 09:17 AM
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HI ..just wondering ..the truck was positive ground when you convert to negitive ground do you need to change anything to get the gauge to read the right way ?? my charge gauge shows discharge instead of a charge ..still have no fuel or temp gauge ..could it be I have fried the voltage regulator ??
 
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Old Apr 16, 2013 | 09:40 AM
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Originally Posted by #1spudman
they are instrument cluster constant voltage regulators
its job is to feed a constant stream of lowered voltage to your gauges '
when it fails the voltage is allowed to increase and all your needles are pegged to the right so say mac's antique auto parts #1spudman
CVR's look similar but those are circuit breakers. CVR's are only used on 12v vehicles that have 6v gauges, which would be Fords from '57 thru the mid-'60's, or any that have been converted to 12v.
 
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Old Apr 16, 2013 | 09:48 AM
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If you convert from positive ground to negative ground you need to reverse the direction of the ammeter wire as now the current flow is opposite, not hard to do.
 
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Old Apr 16, 2013 | 11:55 PM
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I still have a generator....are you saying to just move the amp wire from the direction it is to just flip around ??
 
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Old Apr 17, 2013 | 06:15 AM
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Yes, disconnect the ammeter wire from the gauge, the wire goes through an inductive loop on the back of the gauge, pull the wire out of the loop and feed it through in the opposite direction then reconnect, should be long enough.
 
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Old Apr 17, 2013 | 06:50 AM
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Gently. The loop is not exceedingly rugged.
Nor is it physically connected to the gauge. Unbolt it from the switch contact and re-stitch it through the gauge in the opposite direction. Just like sewing while standing on your head with eyes closed.
 
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Old Apr 17, 2013 | 07:14 AM
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Yes, sorry I did say disconnect it from the gauge, it is an inductive pickup.
The wire insulation may be brittle to so handle it carefully.
 
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