1989 Mariner wire harness extension

The John

Petty Officer 2nd Class
Joined
Nov 16, 2009
Messages
123
Hey everyone,
I was wondering if someone had a line on a wire harness extension for a 1989 Mariner 100hp motor. I think I can manually extend it but I would prefer something premade. The harness that came with this new to me outboard may be a little short. =-(
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,093
A simple search on Mercury boat harness extension turned up 11.8M hits. There is a 6 1/2 foot extension for $25

See if it fits

MERCURY QUICKSILVER BOAT EXTENSION HARNESS 84-879171T03 | 6 1/2 FEET​

 

The John

Petty Officer 2nd Class
Joined
Nov 16, 2009
Messages
123
A simple search on Mercury boat harness extension turned up 11.8M hits. There is a 6 1/2 foot extension for $25

See if it fits

MERCURY QUICKSILVER BOAT EXTENSION HARNESS 84-879171T03 | 6 1/2 FEET​

Yeah, been going down that route but I haven’t found a compatible cable yet.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,093
What kind of cable do you have? Those round plugs were pretty universal in Mercs after they phased out the external quick disconnect plug.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,093
Looks like the available harnesses in your year were 12 wire, 10 wire, 9 wire and 7 wire. Each has a part number you should be able to use in your search. Which do you have?

 

The John

Petty Officer 2nd Class
Joined
Nov 16, 2009
Messages
123
Looks like the available harnesses in your year were 12 wire, 10 wire, 9 wire and 7 wire. Each has a part number you should be able to use in your search. Which do you have?

 
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