Greetings Moparians! Having read The Oracle of the Honorable Mountain (Ehrenberg) on using the venerable 7805 IC regulator to replace the Victorian antique behind the gas gauge, I went in search of some 7805s to make up a few of these for folks. New Egg carries stuff already done. I recommend these, as the 1.5 amp maximum from a single LM 7805 doesn't go far in our old dashboards, as "R.E." should know! I advise you to get a 10 amp supply, which will easily power any USB items you may want to plug in in addition to the old stuff. My only concern about this stuff is its point of manufacture. IFF I find a good vendor of GOOD 78XX chips on our side of the oceans, I'll post links. For the 10A adjustable set: LTC3780 High-efficiency power supply module DC 5-32V to 1V-30V 10A Automatic Step Up Down Regulator Charging Module - Newegg.com Single 7805 based unit: LM7805 three terminal voltage regulator module 5V voltage stabilized power supply module - Newegg.com There's more, but its all more sino-sludge. They do electronics somewhat more reliably than repopping American car parts, though this shouldn't comfort folks much. Ehrenberg's article is old, but maybe you can still buy the ICs from Stateside vendors as listed.