The front brake on our 2006 Suzuki C50 seems to be rubbing the front tire in one place. It's not enough to slow the tire, but when we put it on jack and turn front wheel, we can hear it rubbing. Is

Question edited for clarity.
Question moved to model category.

The problem with a Trike is that the wiring will be custom. For the brake light, check the switch with a multimeter for continuity. For the lights look for a break in the wiring. There may also be a relay involved in the running lights.

https://www.google.com/search?q=2006+suzuki+boulevard+c50+service+manual+pdf

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your going to need a motorcycle lift or another way to get the front wheel off the ground and hold the bike safely. then remove the capiler from the front forks. once that is done. remove the cap to axle bolt and some have a second hold down bolt. my vl1500 has two bolts. 1 for the axle and a second to hold it in place. when removing the axle becareful to remember the location of the inserts for spacers. they can only go one way or the tire will bind up. might be a good idea to label the spacers with a maker and use an arrow to know which way it was pointing to help when putting it back together. and when you get the caliper off I use a screw driver to move the pads apart to make it easy to pull the caliper out of the way. when its back together. pump the brake handle a couple times to build the pressure up and seat the brake pads again. if not you wont have brakes when you try to stop.

Change both front Wheel Hub Bearings

You know the left is bad, so why tells us
change it

The brake wear is from not doing brake work
often enough,no rust removal,no lubing of of
any moving parts

The right side was basically rusted & frozen in place
& not releasing,the repair shops don't do much in that
area,need to do your own work

Take brakes apart once or twice a year

Did you forget to reinstall the bering spacer? did you seat the bearings all the way? did you install the speedometer drive correctly? is the tire rubbing on the fender?

Have the front wheel bearings checked they are a sealed unit that has to be pressed in or assembly removed and replaced. Or your brakes are dragging and rubbing against the rotor it could be the caliper is sticking or the rotor doesn't have enough wave, warp cut in it to push the pads back enough. Most people think a rotor is cut perfectly flat if this was true the pads would rub against the rotor all the time. The car could be jacked up and on stands and have someone listen for the noise right next to the wheel while you speed up the wheels and slow down with the brakes and don't try for 100mph you could hurt the tires

Black the rear wheels, put the car in neutral with the parking brake on, jack up the front end and spin the tires. Once you locate the source of the noise, you can pull the tire off and check the brake pads and rotors.

According to the owners manual: 29psi for the front tire and 36 psi.
But, most stock tires themselves indicate they are 40psi tires. A quick reading through multiple threads indicates most riders follow the tire manufacture due to the ride feeling "mushy" at a lower psi.

Source:http://www.cyclechaos.com/4um/f26/tire-pressure-c50-boulevard-13299/

Loosen tire lug nuts. Jack up the car and remove lug nuts and tire. Remove two bolts holding the caliper in place. Remove the the two bolts holding pads in place. Hang caliper with a wire from wheel so brake line is not stressed. Mount new calipers in correctly and tigthen pad bolts. Put caliper on and tighten caliper bolts. Replace tire and lugs nuts. Jack car down and tigheten lug nuts.

It sounds like pads against the rotors. Does it get louder or stop when applying the brakes?May be a stone or maybe just rust or maybe you need brakes looked at.

I don't recall ever seeing a fuse for those lights. You may want to simply check under the rear fender where the wires run and make sure they haven't been disconnected somehow. I modified my rear fender a while ago and didn't tuck the wires up high enough. I had a passenger ride on the back and the tire rubbed against the wires and completely shorted out my bike. I just had to resplice the wires and everything worked fine after that.