If you have turn signals, they have to work, If they don't work, take them off and you will still pass. The hi/lo beams, tail light, horn and brakes lights have to work. I have NEVER had an inspector check or care about my MC brakes. My last inspection I hit the horn and flashed the brights as I pulled into the stall, the inspector checked the tail light and signals and I was done. Took 10 seconds for the inspection and two minutes for the paperwork.
Nothing in Texas law mandates where the inspection sticker must go. I have put them all over - plates, fender, frame, under the seat. I have never had a cop ask to see it. I think it only matters if you piss the cop off and he's trying to nail you.
Patrick