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Originally Posted by alanaslan
The switch on the dash is just a pulse switch effectively just energising a timer to run the relay ...
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Thanks Alan; that’s my feeling too. It earths C0062-7 only for the time it takes to press the button. This terminal is not suitable for attaching a relay.
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... the other I think feeds the light on the switch. You may be able to run your relay off the lamp feed but I am unsure.
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C0062-5 does feed the switch LED. I expect that it will be a supply capable of only a very low current and may well not be 12v. It would not be good engineering practice to attach a relay to this supply.
Rick, you should wire your relay in parallel with the existing HRW relay. As Alan warns, take care with selecting this component because it will need to be rated for a very high current indeed.
Simon