For installation, you might consider either taking them to a trike dealer, or another option is to have them installed at an automotive upholstery shop.
If you are mechanically inclined, running boards are not difficult to remove ... but more a PITA, time consuming, and can be cumbersome. Most likely the tools needed are: m/c floor jack, once jacked, a way to keep the trike 8" off the ground, a creeper, 7/16" short 1/4 drive socket and ratchet, a 7/16" combo wrench, a 9/16" 1/4 drive wobbly, and a 12" extension. Once off the ground 8", use the m/c jack to support the running board. If you have cornering lamps, you might have to disconnect the wires to those. Up front and under the valve cover, look forward and you will see a 9/16" bolt head to release the running board from where it attaches to the front crash guard.
Depending on your design, sometimes I charges as much as 4hrs labor to remove and install them. Since bras are usually aligned by eye ball, make sure your trike is sitting level from side to side ... since no body likes a lopsided
As others have said, bras ruin paint. For a longer shine, bras must be constantly remove and the mating surfaces cleaned. Then prior to installing the bra, the painted area under the should be waxed to help protect the paint. Any trapped dirt will work like sand paper.