Well, I don't really know. The sender for 64-66 w/guage will prolly not register correctly for a light, but a light WAS used on 67-72 w/o gauges-one of those might work, but there again GM changed from 30 to 90 ohm instruments in 67 on trucks. If you can't find a correct "Cold-Hot" light sender, lemme know I have an extra. Brian
