2000 Mercury 150 EFI Help with TAC

[Mr. Dave]

Was running the boat yesterday and when I powered up from a fishing spot the TAC stopped working. I checked to ensure all wires were tight and attached to TAC and checked the engine as well for any lose wires. <br /><br />Any idea on what the problem could be.<br /><br />Thanks for your help...<br /><br />Dave

 

[wolf 1]

Re: 2000 Mercury 150 EFI Help with TAC

I HAVE A 2000 200HP MERCURY EFI WITH SAME PROBLEM. MY MOTOR HAS 2 VOLTAGE REGULATORS AND THE TACH IS CONNECTED TO THE GREY WIRE ON ONE OF THEM. I SWITCHED THE CONNECTION TO THE OTHER VOLTAGE REGULATOR AND THE TACH STARTED WORKING NOW I'M GOING TO REPLACE THAT REGULATOR BECAUSE I AM NOT GETTING THE PROPER CHARGING VOLTAGE FOR MY BATTERY.HOPE THIS HELPS.<br /><br />WOLF