Vetus bow thruster controls
I have inherited a vetus bow thruster installation on my boat (Dockrell 37). This has a remote radio control for the thruster which also operates the windless. The windless has a switch override in the forward cabin. The thruster has no override and no other control.
As this is an obsolete product and I live in terror of the control unit being deep sixed I wanted to fit a simple switch override to somewhere near the helm - whouldn't have to be waterproof - it could go in the companionway somewhere. As I was doing other work in the bilge anyway I took the opportunity to lay in cables from thruster to companionway.
The problem is that looking at the thruster control wiring (not the main power wiring) there are FOUR cables entering the unit (red, black, white and blue) - and going currently (boom boom) to the remote radio unit. I can't figure out why and do not know how to wire this to a switch. I am supposing that the neutral return may simply be to power up the control unit or control panel? Therefore to get a rocker switch to work all I would need to do would be to have the power to centre with the other wires as the return?
Anyone else come across this situation?
(I have trolled through the Vetus literature and elsewhere to no avail)
All men dream, but not equally.
Those who dream by night, in the dusty recesses of their minds,
wake in the day to find that it was vanity.
But the dreamers of the day are dangerous men,
for they may act their dreams with open eyes, to make it possible.
- T.E. Lawrence -