STORE STOCK #1708. You are buying 1 NEW OLD STOCK relay P/n 853750. Autolite P/n HRC-4001. This part supercedes and is the same as P/n 955556 and is the horn relay for ALL the following models using the 3 wire relay; PLYMOUTH; 1940; 1941; 1942; ALL. DODGE; Dodge 6; 1940; 1941; 1942; ALL, DESOTO; Custom; Deluxe; 1940; 1941; 1942; ALL. CHRYSLER; 1940; 1941; 1942; ALL. This is the 3 wire relay. Part is A-1 in it's original Mopar OR Autolite box and ready to install. Buyer to pay by paypal within 3 days of sale and include 11.00 S&H in USA. I COMBINE SHIPPING ON MULTIPLE ITEMS! Please check my Ebay Store FOR MORE NOS MOPAR PARTS from our 90,000 part inventory!