Aquaholic
Crew Member
Oh it appears you originally wanted to hook up to your GPS/Sonar, (expensive) as I was always referring to the MercMonitor style of gauge, or troll control tach, and the Merc over 40 hp come with Smartcraft technology that allows either to be done. I have the gauge you show, and had to buy the digital cable as above for the trim to show.Where did you pick up the gage or did it come with the motor install? A quick search online shows they are around $500. I have been debating spending the money to hook my motor up to my HDS Live but it is expensive and all I really want is the troll control.