Fitting Daytona heated grips

[Jonathan A]

I have bout Daytona heated grips, and I'm going to set about installing them. I'm determined not to wire them direct to the battery, as I'm sure to leave them on and drain the battery.
I am planning on connecting the live to the wire marked R on this diagram:

https://s574.photobucket.com/download-albums/ss182/hmmmnz1/Hyosung/gt650comet.jpg

Is this a wise choice?
Cheers

[J.M.]

There are multiple live wires marked R on that diagram, which do you mean?

A common (and my) choice is to use the positive feed for the tail light as the switched live for the relay. Then run all your accessories from the relay.
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2004 R1 & 2018 XSR900

[_Iain_]

Ah, but what happens then when you switch the lights off on a bike that uses a switched live instead of earth for the taillight?
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Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340

[J.M.]

You ride around Spain for a day wondering why your phone is refusing to charge
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2004 R1 & 2018 XSR900

[Jonathan A]

Actually using R seems a stupid Idea. I will probably do it with a relay instead, like J.M. Said. If I used the rear light as a feed, where would I connect the earth to?

Btw I have no clue what I'm doing

[J.M.]

A relay is simple:

https://www.banzai-racing.com/how_to/std_relay_connections_diagram.jpg

Pin 86: the switched brake light +12v
Pin 30: battery +12v (with fuse)
Pin 85: to battery negative
Pin 87: supplies +12v to the accessory
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2004 R1 & 2018 XSR900

[_Iain_]

Inside relays;

https://shriramscircuits.files.wordpress.com/2013/09/800px-relay_parts.jpg

https://0.tqn.com/d/autorepair/1/0/v/r/00000101.gif

Basicly, you put power through the coil, it acts as an electromagnet & flips a switch inside the box. If you connect that coil up to the brake light then whenever theres power going to the brake light then it'll charge the coil & flip the switch.
____________________
Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340

[Jonathan A]

So for pin 86 on the relay, could I connect it to yw on my diagram (rear light), and cut into the wire near the headlamp relay?

[J.M.]

I think YW should do it. I usually choose the rear light as it's closest to where I physically install the relay. Also it's arguably one of the least important lights (although you have a registration plate light... it would be 'such' a shame if that went off XD), although it has the risk of not being incredibly noticeable if the light breaks other than your pre-ride checks.
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2004 R1 & 2018 XSR900

[Jonathan A]

All sorted I powered the relay from the numberplate light circuit, which seems ok, as the lights cannot be turned off on my bike. The only bad thing is the mass of wiring under the seat now

[FriendlyEllis]

https://www.canyonchasers.net/shop/generic/relay.php
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Honda CB600F Hornet 2013 -> Kawasaki Z1000SX ABS Tourer 2015