Indicator project

[RoyC]

Going through ebay looking for the parts to fit indicators I have got the choice of two or three pin LED Indicator Flasher Relays.
What is the difference (apart from one pin)?
I'm going for this control  -  http://www.ebay.co.uk/itm/232145515475
Thanks,
Roy.

[bsa-bill]

It's been sometime since I bought mine so I might be way off, but is the third pin for wiring in an indicator lamp [ like as in a warning light on a dashboard)

[kiwipom]

hi guys, Bill you could be right about the third wire but I used the 2 wire unit that is also adjustable, cheers

[RoyC]

Thank you both for the replies.
I think that you may be correct about the warning light looking at this diagram from Greybeard.

[kiwipom]

Hi Roy that certainly like the answer,  so no excuse for leaving them on, cheers

[bsa-bill]

I used the 2 wire unit that is also adjustable

I also used a two wire unit I think, twas a while back and I've been busy on the other bike.
But adjustable - what does it adjust , sounds interesting

[RoyC]

But adjustable - what does it adjust , sounds interesting

I think it's the rate that it flashes.

[bsa-bill]

I think it's the rate that it flashes.

I think the rate it flashes is a fixed standard, altering it might just be illegal

[Butch (cb)]

Just has to be between 60 and 120 per minute dunnit?

[bsa-bill]

Just has to be between 60 and 120 per minute dunnit?

yep - spot on

[beezermacc]

One thing that hasn't been mentioned is that the wattage of the relay should be approximately equal to the wattage of the bulbs. Bear in mind only two bulbs work at a time so, if you use 21w bulbs you need a 42w relay. A few watts either way isn't going to make much difference but if you stray too far from the formula you'll get slow or erratic flashing.

[bsa-bill]

you'll get slow or erratic flashing.

Down to the size of your Mac really 

[RoyC]

you'll get slow or erratic flashing.

Down to the size of your Mac really 

I don't wear a mac.

[RoyC]

One thing that hasn't been mentioned is that the wattage of the relay should be approximately equal to the wattage of the bulbs. Bear in mind only two bulbs work at a time so, if you use 21w bulbs you need a 42w relay. A few watts either way isn't going to make much difference but if you stray too far from the formula you'll get slow or erratic flashing.

Going all LED rout so have ordered an LED relay.