I added an LED volt meter to my bike yesterday, along with a bunch of LED bulbs to lower the power consumption. So far, very happy with the results.
Forgot to take pictures last night, but I'll get the pictures and update the post once I get home and take her for a spin this afternoon.
Instruction is pretty simple... Buy this if you want to make your own case, or if you're like me and bought it before they introduced the version with the case:
Or you can get this one which is in a case:
Or you can use this if you want to get an ammeter as well so you can see the amperage of an accessories or something. Dont know if there's a way you can wire it to see the actual usage of the whole bike plus accessories though.
Seriously considering upgrading to this one now though:
It adds temperature, which you can use one attached to the voltage regulator or the engine for engine temp.
I bought the stripped panel version for $3 a long time ago and I use it to test batteries on the bench and what not when I don't want to find my multimeter.
Took the headlight off, stripped the wire, wrapped it around the right blinker driving light (Black/Yellow is ground, Blue is Positive), and it came right up when I turn the key. I used plastidip to "weatherproof" it, and hot glued it to the center of the console in between the speedo and tach. Rode around a bit and it was steady on there. Will find a more permanent solution, or upgrade to the fancy one with a clock and temp.
I also ordered the 1157 and 1156 LEDs from that website. It's a decent online Chinese retailer, quality is okay, the price is great, shipping takes about 2 weeks or so, but it's free so I'm okay with that.