Originally Posted by 67Therapy
I'm exploring the idea of replacing my Lewmar bow thruster control panel
with a rotary knob/switch.
I need some help from from electrical
gurus on how to describe it (as well as where to find it).
This is the current switch (on the left):
I'd like a rotary knob that is spring loaded to center (OFF) and will turn say 45* to the right or left for ON-R or ON-L. Plus will need some push ON, Push OFF button to arm the rotary switch.
Is this what I'm looking for? Rotoswitch Rotary Switch 2 Position M/On-Off-On - Sierra MP78750 - iboats
If not, can someone give the "technical" terms that describe a switch that does what I'm trying to do.
Since the boat "twists" when the BT is used, I think a switch that twists would be more intuitive...the buttons are subject to "reverse sensing" for the pilots on the forum, whereas a knob visually depicts what you want the bow (or stern) to do.
I was teaching my wife how to back into the slip with a strong crosswind this weekend...
I would suggest learning
to use the stock switches. The manufacturer put a lot of thought into their design. If I were to replace my switches (push buttons), I would go with the joystick pictured.
Now to partially answer your question: A "push on/push off" switch is a poor choice for "arming" the other switch, whichever style you have. A "push on/push off" switch gives no visual indication of whether the circuit is made or not. Without adding an indicator light, you could not walk to the helm
and see if the thruster is ready to use or not. A toggle switch, rocker switch, or even a rotary switch would be a much better choice.
If you really want to replace your existing switch, you have to identify exactly what it does. Having four wires, it is not just a single
pole, double throw, spring return center off switch. Unless one of the wires is a dummy or unless it's a neutral for a lighted switch.
Since a replacement switch won't come with that wiring
harness you will have to understand exactly what the switch does and which terminal connects to which wire on the harness.