Bulb ID

[morqthana]

Missed that...

 

[Ihavenojob]

has no idea of voltage. Apparently all the lights on one side of the boat don't work, so possibly a circuit fault.

One circuit was turned off, lights are fine.

On my screen these two are different colours

That would be the light source when I took the photo. All are the same.
They are internal ceiling lights, still no wiser as to what bulbs they are.

 

[AndyPRK]

Could be the wrong bulb fitted ? Should be. Single element?

have you got a pic of a working lamp?

 

[Harry Bloomfield]

Could be the wrong bulb fitted ? Should be. Single element?

have you got a pic of a working lamp?

It is a single element, just the two pins in the base. If the OP applied 12v to those two pins, I would likely expect it work.

 

[AndyPRK]

That’s your opinion.
It could light dimly

I’m not sure they make LED replacements for lamps used in the 1970s.

 

[Ihavenojob]

They are 12 volt, internal ceiling lights, the idiot partner (ex sparky) had turned one circuit off. They've been back today and all is working ok.

 

[Harry Bloomfield]

That’s your opinion.
It could light dimly

I’m not sure they make LED replacements for lamps used in the 1970s.

and @Ihavenojob's reply, below yours, suggests you were wrong!

 

[SUNRAY]

They are 12 volt, internal ceiling lights, the idiot partner (ex sparky) had turned one circuit off. They've been back today and all is working ok.

Thanks for the update and solution

 

[morqthana]

I'll get my bar of chocolate....

 

[Ihavenojob]

I think I've found them (BA15D)

2 x Warm White 12v LED BA15s Bayonet Bulbs

2 x Warm White, BA15s single contact LED bayonet bulbs. These bulbs are non specific polarity which means they will work on regular and positive ground systems. LED bulbs are a great energy saving alternative to old style filament bulbs, producing less heat and have a longer life expectancy...

www.sunshinesolar.co.uk

 

[Harry Bloomfield]

I think I've found them (BA15D)

No, that says 'BA15s single contact LED bayonet bulbs.' That is a single contact pin, using the metal outer of the base, as the second pole - you need one with two contact pins.

 

[Ihavenojob]

No, that says 'BA15s single contact LED bayonet bulbs.' That is a single contact pin, using the metal outer of the base, as the second pole - you need one with two contact pins.

If you click the link, they show BA15S (single) and BA15D (double), they sell both.

 

[Harry Bloomfield]

If you click the link, they show BA15S (single) and BA15D (double)

Nope, the link you quoted, only includes one type, the BA15S, the site itself might also sell the BA15D, but that was no what you linked to.

 

[morqthana]

@Ihavenojob is right - the link does show both types and they do sell both sites. No, it is not a link to a BA15D, but this

If you click the link, they show BA15S (single) and BA15D (double), they sell both.

is spot on.

Curious drawing though:

The pins are symmetrical - how can they guarantee polarity?

 

[SUNRAY]

@Ihavenojob is right - the link does show both types and they do sell both sites. No, it is not a link to a BA15D, but this



is spot on.

Curious drawing though:

View attachment 388230

The pins are symmetrical - how can they guarantee polarity?

They dont need to as they are not polarity sensitive.

The image in the listing shows the difference between both formats but the listing, as Harry has correctly mentioned, is only for the single contact product:

Look at: https://www.sunshinesolar.co.uk/Item/BA15DWW-2
For: