Wiring?

[Monkeyman]

I'm hoping to install all 3 gauges (water temp, oil press and volts) this weekend as well as wire up the entire fairing (ending with the 4 way plugs at the fairing/bike). This way, once I get my main bracket, I can bolt it together, plug stuff in and be done.

I've read Gadgets write up about wiring up the gauges but want to make sure I'm doing things correctly. It would be nice to only have to do something once this time.

For the voltmeter...I understand it only needs power and ground. I'd like to keep the wires from fairing to bike at a minimum. Can I take power/ground from anywhere or do they need to be dedicated to this gauge? Do they need to run from the battery to the gauge or can they be combined with other power/ground wires? Is there anything that CAN'T be between the battery and the gauge (switches, relays, lighter, etc)?

For the oil press/water temp...all they need between the sending units and gauges is the sending unit wire, right? Do they also need some sort of power (other than the back light) or do they get that from the sending unit?

I know I can daisy chain the back lights (power and ground) for the gauges. Do these wires need to be run straight to the battery or can they be branched off of something else?

Like I said, I'm trying to have as few connections from the battery to the fairing as possible. I've run a pair of hot and a pair of ground wires from the battery to the front of the bike. I'll need to wire up these 3 gauges, run power to a switch/flasher for 4 ways, power to a lighter (to charge my phone) and run constant and switched power to the stereo. Will these be enough wires? I thought I had it figured out but then I added these gauges to the mix and I got cornfuzzled all over again.

I'd like to get my wiring diagrams solidified this week so I can start on this when I get off work Friday.