Instrument cluster voltage regulator

I just bought another one on ebay a few days ago, ~$25, this one for my 64 Valiant. Search "Plymouth" AND "voltage limiter" or such. Several companies sell them. One guy I think is a member here. For Rallye dashes (tach), it was still inside the fuel gage until ~1973. I would expect world-wide. Many posts on here if you search. One seller has excellent photos showing how you open up the fuel gage to disable the factory Vreg. I just slipped heat shrink over the thermal arm. The new electronic Vreg's work much better.