Nasamarine anchor/tricolour DPDT switch replacement

[Ric]

I have a Nasamarine masthead anchor/tricolour light. The original DPDT polarity reversing switch got corroded so I replaced it with a 6-pole three position ON_OFF_ON switch rashly bought without much thought from a chandlers, and reconnected the NASA wiring loom to the same geographic positions. So now the light doesn't work and I think I might have bought the wrong sort of six connector switch? .Are there different types? Is the NASA one special in any way?

 

[RupertW]

It shouldn‘t be different in the way it functions though I suppose the connections might be but I would be surprised. I just used one off eBay. The first thing to test is if you directly (without the switch) connect positive and negative of the supply to the wires from the anchor/tricolour then does it come on? Then reverse the connections and check the light has changed function. If that all doesn’t work then it’s a problem with supply or wiring up to the masthead.

So what you should have is middle two connectors on switch to the wires from the tricolour/anchor, pos and neg to the pair at one end of the switches travel then the opposite way round to the other end of the switch.

 

[VicS]

I have a Nasamarine masthead anchor/tricolour light. The original DPDT polarity reversing switch got corroded so I replaced it with a 6-pole three position ON_OFF_ON switch rashly bought without much thought from a chandlers, and reconnected the NASA wiring loom to the same geographic positions. So now the light doesn't work and I think I might have bought the wrong sort of six connector switch? .Are there different types? Is the NASA one special in any way?

You need a DPDT switch with centre off ( ie ON, OFF, ON)

Wire its as shown in figure 7 in the Nasa insructions manual:- https://seamarknunn.com/acatalog/2048274.pdf

 

[daangs]

This happened to me when I snapped off the rotary switch. I replaced it with a cheap 6 pole switch from Maplin but for simplicity it only switched between anchor and nav light. On off was managed from switch panel with the anchor/nav rocker next to it. I used a piggy back terminal for the 6 pole switch (crimping to be improved) but soldering them onto one terminal would probably be better.

 

[StUrrock]

Maybe this video may help, i use two the two existing switches on my panel.
one switche turns on the nav light and with this left turned on when i turn on the anchor light switch it reverses the polarity.

 

[VicS]

This happened to me when I snapped off the rotary switch. I replaced it with a cheap 6 pole switch from Maplin but for simplicity it only switched between anchor and nav light. On off was managed from switch panel with the anchor/nav rocker next to it. I used a piggy back terminal for the 6 pole switch (crimping to be improved) but soldering them onto one terminal would probably be better.

Why on earth choose a 6 pole switch when all that is required is a double pole , double throw switch

Perhaps you don't mean a 6 pole switch ... your photo appears to show a double pole , double throw switch

 

[rogerthebodger]

Why on earth choose a 6 pole switch when all that is required is a double pole , double throw switch

Perhaps you don't mean a 6 pole switch ... your photo appears to show a double pole , double throw switch

Vic he is probilly counting the number of terminals not the number of poles.

I also looks like a DPDT switch

 

[daangs]

Why on earth choose a 6 pole switch when all that is required is a double pole , double throw switch

Perhaps you don't mean a 6 pole switch ... your photo appears to show a double pole , double throw switch

You’re right, it is a 6 pin double pole, double throw switch. I was getting my pins and poles mixed up