1965 dart dash voltage

As in the rally gauge clusters, the VR in those is INSIDE the fuel gauge, which has three terminals. One terminal is the OUTPUT of the VR, which is then jumpered across to power the temp gauge.

You have a shop manual? Here's a 66 from this thread:

http://www.forabodiesonly.com/mopar/showthread.php?t=132309&highlight=manual,+download

The 66 manual:

http://www.mymopar.com/downloads/ser...ice_Manual.zip

Some "stuff:"

http://rt-eng.com/rte/index.php/RTE_Gauge_Faq