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Technical (Descriptive Topic Titles - Stay on Topic) => Lucas, Ignition, Charging, Electrical => Topic started by: RoyC on 06.09. 2017 15:42

Title: Indicator project
Post by: RoyC on 06.09. 2017 15:42
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.
Title: Re: Indicator project
Post by: bsa-bill on 06.09. 2017 19:36
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)
Title: Re: Indicator project
Post by: kiwipom on 07.09. 2017 02:32
hi guys, Bill you could be right about the third wire but I used the 2 wire unit that is also adjustable, cheers
Title: Re: Indicator project
Post by: RoyC on 07.09. 2017 08:21
Thank you both for the replies.
I think that you may be correct about the warning light looking at this diagram from Greybeard.
Title: Re: Indicator project
Post by: kiwipom on 07.09. 2017 08:38
Hi Roy that certainly like the answer,  so no excuse for leaving them on, cheers
Title: Re: Indicator project
Post by: bsa-bill on 07.09. 2017 09:35
Quote
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
Title: Re: Indicator project
Post by: RoyC on 07.09. 2017 10:09
Quote from: bsa-bill on 07.09. 2017 09:35
Quote

But adjustable - what does it adjust , sounds interesting
I think it's the rate that it flashes.
Title: Re: Indicator project
Post by: bsa-bill on 07.09. 2017 10:48
Quote
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
Title: Re: Indicator project
Post by: Butch (cb) on 07.09. 2017 13:04
Just has to be between 60 and 120 per minute dunnit?
Title: Re: Indicator project
Post by: bsa-bill on 07.09. 2017 13:32
Quote
Just has to be between 60 and 120 per minute dunnit?

yep - spot on
Title: Re: Indicator project
Post by: beezermacc on 07.09. 2017 16:23
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.
Title: Re: Indicator project
Post by: bsa-bill on 07.09. 2017 16:43
Quote
you'll get slow or erratic flashing.

Down to the size of your Mac really  *smiley4*
Title: Re: Indicator project
Post by: RoyC on 07.09. 2017 20:52
Quote from: bsa-bill on 07.09. 2017 16:43
Quote
you'll get slow or erratic flashing.

Down to the size of your Mac really  *smiley4*
I don't wear a mac.
Title: Re: Indicator project
Post by: RoyC on 07.09. 2017 20:55
Quote from: beezermacc on 07.09. 2017 16:23
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.