414-3369 Mercury Mariner Engine harness 84-64997, 84-73369 Mercury Mariner Outboard Motor Parts 414-3369 Engine harness 84-64997, 84-73369, 84-73369A1, 84-73447, 84-73447A1, 84-76295, 84-76295A1. NOS MERCURY 84-73447A1 WIRING HARNESS | eBay NOS MERCURY 84-73447A1 WIRING HARNESS Years Used and HP are provided as a guide. It is your responsibility to ensure that this part is correct for your motor. *** BEFORE MAKING AN OFFER KEEP THIS IN MIND *** If you make an offer and we accept it, that is a purchase commitment to us. You will receive an invoice.4/5(1)Seller Rating: 99.9% positiveBrand: MercuryLocation: Plainwell, Michigan WIRING HARNESS - Oldmercs Product Code: 84-73447A1. Description Internal wiring harness fits 1977-79 Merc 500. Related Products.. ENGINE HARNESS CABLE ASSY WIRING HARNESS Electric & Manual Starting Components > Wiring Harnesses Mercury Outboard Models > 1977 - 1979 > Merc 500 > Top Cowl and Starter: Follow. Newsletter Sign Up. WIRING HARNESS (INTERNAL) 84-73447 - crowleymarine Find WIRING HARNESS (INTERNAL) - 73447 here. Not Shipping - No Longer Available. Offering discount prices on OEM Mercury Marine parts for over 45 years.