This is what I did on my SL-34
Firstly for the indicators I installed a universal indicator stalk with the little light in the end of it you also need to wire in a flasher can.
For the Brake switch I just put one down on the arms under the floor its a spring operated switch
For the lights we used the arrow type mounted on the front guard and made up a box to fit the rear lights into also put a couple of small spot lights on the front which we use as running lights when we are out and about.
Trevor