Not sure if you fixed your problem, but the 71-73 Mustang Fuel Sender des not work on 12V. the IVE controls the voltage a around 2-3 second intervals at about 5-6 vdc. The sender should have a resistance value of 10 ohms when the tanks is full and should read about 73 ohms when the tanks is...
Welcome to the Forum. I have just completed about 90% of my intereior so if you need some help or maybe some advise (good or bad) just ask and I will see what I have. I made quite a few learning experiences. Good luck witht he rebuild, it si a lot of fun for sure. Later, eh!
The nova Scotia Mustang club are planning a trip thrpugh Quebec City (Levis) and down into New Hampshire next summer. As the timeline progress maybe we could set a drive through show and shine?