Temperature gauge does not work on my 1970 340 Duster ?

my temp and amp gauges were iffy at best, oil pressure was OK but not that useful with just HI /LO. Felt like I could sort this 'till the cows came home and still have 50 year old worn junk that wasn't great when new. Basic trio of aftermarket gauges was best option for me and easy install. no regrets. These type worked OK for me. I appreciate you may want to keep it stock and get it all working. fwiw

Equus 6200: Trio Gauge Set 2" Diameter | JEGS