I have a ControlKing speed control on my 9.9 merc bigfoot to fine adjust trolling speed. I also have a Remote Troll steering control on the same motor. The speed control works fine until I use the remote troll toggle switch to adjust steering. Seems there is a voltage spike that causes the ControlKing servo (mtd on the motor) to change speed. I have contacted the ControlKing folks and they deny any problems with this. The wires to both the ControlKing and remote troll servos are close together, and can't be relocated. Here is what I have done so far to try to fix the problem:
1) I took the ControlKing off the main batteries and connected it to a separate 12V 9ah rechargeable battery. This worked but its a nuisance to worry with recharging the smaller battery, especially on longer fishing trips.
2) I replaced the 9ah battery with a 12v to 12v isolated dc power supply rated 15 watts. This worked fairly well until summer when the weather got hot. The powersupply seemed to just shut down a couple of times.
Has anyone had this same problem and how did you fix it ?
3) I'm currently thinking about eliminating the remote troll steering servo and replacing it with a main motor to trolling motor tie bar. This would forfeit some of the flexibility of steering the trolling motor, but it would at least eliminate the voltage surges to the ControlKing (I think). The downrigger motors might be a problem as well. Would appreciate any advice you might have before I make another change.
Many thanks, Trueblue3
1) I took the ControlKing off the main batteries and connected it to a separate 12V 9ah rechargeable battery. This worked but its a nuisance to worry with recharging the smaller battery, especially on longer fishing trips.
2) I replaced the 9ah battery with a 12v to 12v isolated dc power supply rated 15 watts. This worked fairly well until summer when the weather got hot. The powersupply seemed to just shut down a couple of times.
Has anyone had this same problem and how did you fix it ?
3) I'm currently thinking about eliminating the remote troll steering servo and replacing it with a main motor to trolling motor tie bar. This would forfeit some of the flexibility of steering the trolling motor, but it would at least eliminate the voltage surges to the ControlKing (I think). The downrigger motors might be a problem as well. Would appreciate any advice you might have before I make another change.
Many thanks, Trueblue3