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Old 03-13-2020, 10:30 PM
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67GP428 67GP428 is offline
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Location: Goodyear, Az
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Default 65 Car dash gauges?

I went from a warning light dash, to a gauge type. When I turn on key. The oil and temp. Gauge needles sweep to the high position? Does it matter what side the pink(hot) wire lands on the gauge? Also my fuel gauge is reading full? Thank isn't full.

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1965 Pontiac 2+2 421 HO auto
1967 Pontiac Grand Prix 428 4 speed- sold
1968 Firebird 400 auto - sold
1967 Bonneville Brougham 2 dr. hardtop. 1969 AMC Rebel SST wagon-sold
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Old 03-13-2020, 10:42 PM
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Stuart Stuart is offline
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First of all besides being a 1965, what make and model car is it? Did you change the sending units on the engine?

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Old 03-14-2020, 10:49 AM
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67GP428 67GP428 is offline
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65 Catalina 2+2. I've changed out both sending units. Even when the sending units are unplugged the gauges read to the far right. The dash bezel is grounded.

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1965 Pontiac 2+2 421 HO auto
1967 Pontiac Grand Prix 428 4 speed- sold
1968 Firebird 400 auto - sold
1967 Bonneville Brougham 2 dr. hardtop. 1969 AMC Rebel SST wagon-sold
  #4  
Old 03-14-2020, 11:00 AM
"QUICK-SILVER" "QUICK-SILVER" is offline
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Quote:
Originally Posted by 67GP428 View Post
Does it matter what side the pink(hot) wire lands on the gauge?
Yes it does. It matters a bunch.

Should be able to ohm test the + stud and sending unit stud to ground and see which is which.

The + stud should have more resistance to ground than the sending unit stud.

The ohm difference between the two will be equal to the ohm reading of the resistor on the back of the gauge, and/or thats the ohm reading across the two studs.

Clay

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