Best place to take a positive feed from?

[bloodbikes]

Hi all,
I'm looking for the best place to take a positive feed from after the ignition to feed some auxiliary USB ports, can I connect after the rectifier or is it best to connect in on a wire to the fuse block, the usb's will be fused separately.

 

[Biggles]

Your safest bet is to take a wire off the battery +ve and connect it to a relay via an inline fuse.  The relay is then switched on with a wire from the ignition circuit.  That way you aren't trying to take power from another circuit, and you can use as much juice as the fuse allows.

[alans1100]

Your safest bet is to take a wire off the battery +ve and connect it to a relay via an inline fuse.  The relay is then switched on with a wire from the ignition circuit.  That way you aren't trying to take power from another circuit, and you can use as much juice as the fuse allows.

I wanted my power install on all the time so I just wired directly to the battery. Most things I use have a 12 volt car charger which in most cases step down to 5 volt as do the couple USB chargers that I've got.

[Biggles]

I wanted my power install on all the time so I just wired directly to the battery. Most things I use have a 12 volt car charger which in most cases step down to 5 volt as do the couple USB chargers that I've got.

Any wire you run to the battery positive must be fused or you run the risk of destroying the battery and potentially causing a fire in the event of a short.  And a short circuit is most likely to occur in wiring installed by an owner because it is most vulnerable to friction interference being outside the vehicle's cable system.

[alans1100]

Any wire you run to the battery positive must be fused or you run the risk of destroying the battery and potentially causing a fire in the event of a short.

Any decent accessory of this type will already have an inline fuse (my dual socket came with a 20amp) on the positive side of the wiring so it's just plug in and play. As for friction........it's not that difficult to secure an added wire or two with electrical tape to an existing wiring loom.

[Snake]

I found 3 wires near right hand indicator not being used that ran from the junction box under the seat. The red and white wires had positive feed once lights are on and black was negative.  Most wiring I do I wrap in split tubing then zip tie to frame or other wiring to reduce movement and possibly rubbing

[Brock]

Peter,

You have the perfect place to get a switched power feed in the duck tail of the bike, in the police wiring cluster. Or you can use that line to work a relay that can then switch on a heavier line from the battery. You just need to run the wire up to the front of the bike if thats where you want it.