Coffeelandy
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Electrikery help please?
- Thread starter Coffeelandy
- Start date
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Bobsticle
De Villes Advocaat
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No idea but one might be the poz feed for switch lamp/led and one the neg feed for ye relay.
Coffeelandy
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Ah that makes sense so I plumb in a low voltage feed from existing wiring maybe so the switch lights up when it's on?
Roaming Wombat
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Is it an illuminated rocker switch? Looks like the power rail for the switch light/LED
Bobsticle
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Dont plumb anything in on my guess................. worth a test to see though.
Coffeelandy
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Yep it is.
Sakara
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Battery feed. The feed to the relay coil is from that via the rocker switch. The feed on the right hand side is what powers the load, via the fuse and the relay contacts.
Coffeelandy
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Um I thought the batt feed was before the fuse?
Bobsticle
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Good. Do I win a prize?
Roaming Wombat
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IIlluminated rocker switches sort of have standardised pin outs
1 : not used
2 : +V DC
3 : Accessory
4 : not used
5 : not used
6 : Switch Illumination
7 : GND
8 : GND
1 : not used
2 : +V DC
3 : Accessory
4 : not used
5 : not used
6 : Switch Illumination
7 : GND
8 : GND
Coffeelandy
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I reckon the mystery inputs are to illuminate the switch. I'll try it and see.
Sakara
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The feed for the load is fused on that drawing. The feed to the coils side isn't.
Roaming Wombat
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Look at it like 2 seperate circuits join by the relay,
To the left of the relay is one circuit (low load) which is the control circuit for the relay.
To the right of the relay is the other circuit (high load) which is what you are trying to power/control (such as spot lights etc)
Both circuits need a +V DC input, and both should be fused. A nice small fuse on the input to the switch/control circuit, a suitably big fuse on the high load circuit.
Sakara
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The relay is 2 separate circuits. The coil side is fed from the inputs you are asking about and the load is from the circuit on the right. If they were joined then there would be no need for the relay.
Edited due to being an idiot
Coffeelandy
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Got it! Thanks Gents I'll let you know how I go.
zeaphod
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+1 The relay isolates the switch from the load, so you need a power supply at both sides. You could tee one off the other, but for example, the +ve feed for the switch side would often come from a circuit that was only live when the ignition is on. The +ve feed for the other side is usually your new fused supply to run the e.g spotlights.
Coffeelandy
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I'm going to use a spare 12v socket wire to power my switches and relays.
zeaphod
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Just make sure it's fused somewhere - in case a previous owner has altered things!
