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**VetteVet** · 01-09-2018, 04:24 PM

Andy I read an article on the gauge resistors and according to them the senders have certain dead spots in their resistance to heat to ground relationships. The sender will have a spot where the coolant heat has to rise quite a bit to effect any movement in the gauge needle.
To smooth that out, the engineers calibrated the resistors to the senders and the gauges and I assume the colors identify the resistance values.

one of our members, Tom TBone has done quite a bit of experimenting on the gauges and resistors and he may know more about the subject also he has a stock of resistors and he repairs gauges and clusters.

Here's a thread by him on fuel gauges so you can PM on the subject.

http://67-72chevytrucks.com/vboard/s...d.php?t=640615

01-09-2018, 04:24 PM	#2
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,703	Re: Reistor's Andy I read an article on the gauge resistors and according to them the senders have certain dead spots in their resistance to heat to ground relationships. The sender will have a spot where the coolant heat has to rise quite a bit to effect any movement in the gauge needle. To smooth that out, the engineers calibrated the resistors to the senders and the gauges and I assume the colors identify the resistance values. one of our members, Tom TBone has done quite a bit of experimenting on the gauges and resistors and he may know more about the subject also he has a stock of resistors and he repairs gauges and clusters. Here's a thread by him on fuel gauges so you can PM on the subject. http://67-72chevytrucks.com/vboard/s...d.php?t=640615 __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.