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12 volt power supply

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dave mike View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave mike Quote  Post ReplyReply Direct Link To This Post Topic: 12 volt power supply
    Posted: 08 Jan 2019 at 18:07
Hi guys just a quick question, I have a 2008 v7 classic and it has heated grips, but they are wired direct to the battery, so if you leave them turned on they would drain the battery.
So I am wondering where is the best place to take a 12v feed that would be switched with the ignition. I expect this has been done before to power various things such as powering sat navs etc. any advice would be well appreciated.
Dave.
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rapheal View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rapheal Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 2019 at 19:07
If they are Oxford grips they have a voltage sensor that cuts the power if the battery voltage goes below something like 11.7 v
I have these grips but I fitted a relay in the sidepanel wired to the ignition circuit as an additional measure, this takes its feed from the battery to power the grips
dont connect the heated grip to a switched 12V feed as you will overload a circuit
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 2019 at 20:56
I would add a relay in the circuit, controlled by the ignition switch. That way you don't load the switch contacts any more.
Brian.

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dave mike View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave mike Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 2019 at 23:14
OK guys so it looks like a relay is the way to go and I think I am right in saying the side lights are permanently on so that would be an easy point to get power to work the relay.
Cheers Dave.
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