They are way overpriced. However I have two eight inch led strips under my tank on the tank flange/seem. I got the strips as a car light set at Big Lots for $7. They were made to plug into a cig lighter and had about ten feet of wire. I bought an accessory plug with a pig tail, and a toggle switch. Soldered in the components and stuck them on. They plug into the pig tail for my battery tender and the on/off is mounted on the engine mount under the tank in easy reach. Total cost $27.
They add a slight blue glow to the engine. They worked WONDERFUL last night as ground lights. Leaving a friends I took a short cut through his yard....full of 1/2 rotted pairs. Which threw the bike into a slide that ended where mud and gravel lined the temp work site the township has on his property. Now on a hillside, left side high, right side-well, I couldnt touch ground, my front tire was up hill and wedged against a huge rock. The only ambiant light was from my tank lights. Gave enough light so I could see how close to the gravel my exhaust was. I had to dismount the bike on the left, spin the rear tire to slide it more down hill so I could get the front tire out of the hole, next to the rock wedging it, so that I could use the weight of the bike to coast it away from this gravel lined yellow clay quagmire.
Some how I got it turned around, while dismounted, with out dropping it, and with out grinding gravel into the exhaust on the left side, which I could see cause of the lights. I was able to happily drive out of his (deep) gravel driveway onto pavement where my bike happily sprayed clay and rotten pairs from its wheels.
This moring it sits outside attracting fruit flys waiting for a bath.