Relay Question

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Coffeelandy said:
I hate relays!!!
Click to expand...

It took me a while to get my head round them. Mostly because I tried to work out how to wire them before why they're used and how they work...well....that and in a bit fick :)

Spotlights did it for me. A bank of spots might double the load on a wiring circuit and fry the wiring. So you make a new circuit. Battery....fuse....spots...earth.

You want the spots to come on with high beam so you put a relay in after the fuse and wire one side of the relay to your main bean circuit. When main beam becomes live it throws the switch in the other side of the relay in the spots circuit.

It's keeps the two circuits seperate so there's no extra load on your existing light wiring (except what's need to flick the relay but that's tiny) and the spots turn on and off when you want :)
 
I use them to protect my sensetive chineese led push button switches.
A relay only draws 20 milliamperes through the switch so its unlikely to burn it out.
Origional Lucas switches take much more juice through them but its nice to protect ageing circuits too.
I also wear very tight underwear and a small stone in my shoe. Saves me donning the full gimp suit in public.
 
blue beasty said:
It took me a while to get my head round them. Mostly because I tried to work out how to wire them before why they're used and how they work...well....that and in a bit fick :)

Spotlights did it for me. A bank of spots might double the load on a wiring circuit and fry the wiring. So you make a new circuit. Battery....fuse....spots...earth.

You want the spots to come on with high beam so you put a relay in after the fuse and wire one side of the relay to your main bean circuit. When main beam becomes live it throws the switch in the other side of the relay in the spots circuit.

It's keeps the two circuits seperate so there's no extra load on your existing light wiring (except what's need to flick the relay but that's tiny) and the spots turn on and off when you want :)
Click to expand...
So, if I make a new power lead from battery, to online fuse, to relay and use the ignition cigg lighter wire to switch the relay will that work?
 
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