mercury 14 pin harness | eBay Find great deals on eBay for mercury 14 pin harness. Shop with confidence. Skip to main content. eBay Logo: Side Mount Remote Control 14 Pin 15ft Wire Harness 881170A13 For Mercury Optimax See more like this. US Mercury New OEM Side Mount Remote Control 14 Pin, 15ft Wire Harness 881170A13. Brand New. Mercury marine 14 pin HARNESS ASSEMBLY color codes Jun 23, 2014Trying to figure out the connections.o alarm is supposed to be connected to "tan/blue"( so it says on the alarm units wire sticker at least) But there is no "tan/blue" on harness? Cant find anything on the web, on line wire diagrams that i found refers to the older 10 pin harness, thay having the tan blue? Anyone know these engines?