My Part (Ballast Resistors) Up For Sale on ebay - here's the link: US MADE MOPAR Plymouth Dodge NEW 4-Prong Ballast Resistor PN 3874767 1971-Newer | eBay Mopar Part Number 3874767 - One (1) NOS/NORS (New Old Stock/New Old Replacement Stock) Four-Post Ballast Resistor for all Mopars (Dodge, Plymouth, Chrysler), for 1971 and newer production cars, trucks, and vans with Electronic Ignition. Again, you are purchasing ONE (1) 4 Post Ballast Resistor! Excellent for your restoration and/or to have as the spare(s) in your glovebox. You have your choice of a "blank" ballast resistor (no part number stamped on the ballast resistor), or a ballast resistor with the Part Number 3874767 stamped in the component - just specify in your PayPal message what you want when you checkout. Again, this is a NOS (New Old Stock) Ballast Resistor, produced by a Chrysler Corporation supplier to Chrysler specifications - MADE IN THE USA! Note the second photo showing the back of the ballast resistor - the ballast resistors are sealed, not open! This means that the resistors are not "open" facing the firewall of your car! A superbly manufactured part! This is a NEW (NOS - New Old Stock), as well as replacement (NORS - New Old Replacement Stock) ballast resistor, MADE IN THE USA!!!! Cross reference Part Numbers Include: Part Number # RU12, RU12T, RUE1, WELLS# 6R1008, CR1105, Other Part Numbers 8A4, CR105, 50-5501, FR57, 73071, ICR24, 5212 OE# 12336833, 23005, 3656199, 3874767 Price is $7.75 each, with free shipping. Ballast Resistors are located in Northport, NY (Long Island).