Water temperature guage

**15 Mustang** · 08-04-2009, 08:05 PM

I have a new-in-the-box Mercury/Mariner temperature gauge kit. In the parts and instructions it provides and shows a single brass temperature sending piece to be installed on the head but, my engine already has a a wire that runs to each head to read engine temperature? Does anyone know the solution (hook-up) wiring procedure for a temperature gauge to my engine? My engine is a 1989 (200hp) V-6 Mariner Outboard.....any help would be most appreciated..

**Jeff_G** · 08-04-2009, 10:33 PM

Leave the temp wires where they are. The sender with the gauge uses a mount that goes under a water jacket bolt.age is to be installed against the block. The senders in the block are for overheat warning.

**j_martin** · 08-04-2009, 11:36 PM

My V6 has a sender in each head. One if for the overheat alarm, and the other is for a temperature gauge, and is wired all the way to the dashboard even though there isn't a temp gauge installed.

**15 Mustang** · 08-05-2009, 04:52 AM

So if the wire from the motor goes all the way to the dash which wire out of my harness hooks-up to the temp gauge? What other wires would also need to go to the temp gauge?

**j_martin** · 08-05-2009, 08:47 AM

Originally Posted by 15 Mustang

So if the wire from the motor goes all the way to the dash which wire out of my harness hooks-up to the temp gauge? What other wires would also need to go to the temp gauge?

Purple keyed power, ground, and lights.