1994 Force 120 controls.

[kbh121956]

This 120hp uses the Mercury style control box. It has a plug that runs the gauges at the helm. My question is, there are five wires. One is brown/blue stripe. Brown/white stripe. Purple. Black, I assume is a ground. Gray is the tachometer wire. What are the brown/blue, brown/white and purple used for?

 

[kbh121956]

Ok, I found a little information on the internet. Black is Tachometer ground, Purple is positive on tach, Gray is alt or sender on tachometer. Still wondering what the Brown/white and Brown/blue are used for.

 

[Jiggz]

I'll take a guess, the Tan/Lt Blu is the temp sensor wire.

 

[jerryjerry05]

Look on the motor for the brown white wire and that will tell what it's hooked to.

 

[Nordin]

Check Mastertech Marine, they have wiring diagrams.

 

[kbh121956]

Ok guys thanks for the help. Jiggz was right the tan/blue is the overheat alarm. Purple - keyed power to run gauges and stuff. Gray - sender on tachometer. Brown/white - trim gauge. Black - ground. I put this 120HP on a old 1971 StarCraft 18' SS. It had a Merc 140 that was left up for 14 years. It was locked solid, both the engine and gearcase. After replacing the transom and some fresh paint, it will be a great boat for fishing my local lakes.

 

[Jiggz]

She looks like a winner!