The Triumph Dolomite Club - Discussion Forum

GrahamFountain wrote: ↑Sat Aug 19, 2023 3:52 pm

new to this wrote: ↑Sun Aug 13, 2023 8:35 pm Ive got a capillary fan controller to wire, plus i want a manual over ride, having a bit of trouble working it out

What makes it a bit harder is the manual over ride, i want to use the choke switch and light, i think i can wire the relay but switch/control it via the earth, but how do i wire the capillary controller ?

Dave

I'm not quite sure that I get what you want the choke switch to do in this case. That's because I can't see why you'd want to turn the fan on when the choke is pulled.

But if that really is it, then the next question is whether the fan is to stay on with the ignition off, if the thermostatic switch is closed?

If the fan is to stay on until the thermostatic switch opens after the ignition is turned off, then something like this is what you would need:



The lower relay ensures that the fan eventually goes off if the choke is left pulled out after the ignition is turned off.

If the fan is to go straight off with the ignition off, then you only need the upper relay, with the coil powered off the ignition switched supply and earthed through both the thermostatic switch and the choke switch in parallel.

new to this wrote: ↑Sun Aug 20, 2023 6:27 pm I'm not using the choke as I'm going to be running EFI

GrahamFountain wrote: ↑Sun Aug 20, 2023 8:34 pm

new to this wrote: ↑Sun Aug 20, 2023 6:27 pm I'm not using the choke as I'm going to be running EFI

Won't you have to do something to stop the (I assume) shortened cable just pulling right through? Also, I've had some frustrating issues with the choke light switch in the dolomite.

In which case, wouldn't there be a better, more traditional Lucas electrical switch from some other triumph that uses the same style lock-nut and so should look the part? The light switch from a 13/60 Herald might do, but the knob is an odd shape, and it's a multi-position pull switch. I know that there are a few round knob dash switches in the 1200 Herald that use that lock-nut. I think some of the TR's have them too.

I'd sand and polish the etching off and get one of them cobblers that sell plastic trophy's to draw a fan on it. I got one to redo the body number plates for a TR7 from a drawing of the font I wanted from a file. Don't remember the file format, but they'll tell you.

Graham

Graham

GrahamFountain wrote: ↑Sun Aug 20, 2023 9:59 pm Would this be too fat?



https://www.ebay.co.uk/itm/285438797056 ... 42757a6500

I reckon the switch barrel is about 20 mm.

Graham

Carledo wrote: ↑Mon Aug 21, 2023 10:07 pm I use an ordinary 76> Dolomite HRW switch, I have quite a few. If you are using a relay for the fan, you can use the choke light power source and it'll run the choke light as a "fan on" warning (in case you can't hear the fan!)

Steve

Steve

Thats what i was hoping to do, with the warning light, all being well and i dont mess any thing up

Dave

Carledo wrote: ↑Mon Aug 21, 2023 10:07 pm I use an ordinary 76> Dolomite HRW switch, I have quite a few. If you are using a relay for the fan, you can use the choke light power source and it'll run the choke light as a "fan on" warning (in case you can't hear the fan!)

Steve

GrahamFountain wrote: ↑Wed Aug 23, 2023 1:09 pm

Carledo wrote: ↑Mon Aug 21, 2023 10:07 pm I use an ordinary 76> Dolomite HRW switch, I have quite a few. If you are using a relay for the fan, you can use the choke light power source and it'll run the choke light as a "fan on" warning (in case you can't hear the fan!)

Steve

Ah, if those ones Graham Gibson has listed at https://www.ebay.co.uk/itm/385204117721 really are Dolomite ones (I didn't know for sure as my Sprint has a different one under the dash), then maybe you or Alun are the go-to guys?

Graham

GrahamFountain wrote: ↑Wed Aug 23, 2023 1:09 pm

Carledo wrote: ↑Mon Aug 21, 2023 10:07 pm I use an ordinary 76> Dolomite HRW switch, I have quite a few. If you are using a relay for the fan, you can use the choke light power source and it'll run the choke light as a "fan on" warning (in case you can't hear the fan!)

Steve

Ah, if those ones Graham Gibson has listed at https://www.ebay.co.uk/itm/385204117721 really are Dolomite ones (I didn't know for sure as my Sprint has a different one under the dash), then maybe you or Alun are the go-to guys?

Graham

Carledo wrote: ↑Wed Aug 23, 2023 3:46 pm The earlier switch, as you say fits under the dash next to the choke and is self illuminating (if you're lucky!) It's also a lot rarer!

Steve