The 4710 controller is designed for the rear.I`m using a set of large halogen Kuryakyn SilverBullets.They are single filament 20 watt bulbs.In running or tailight mode the current is restricted ie:less than 20w each,but equal to the stock tailight.Touch the brakes and all the juice goes to the bulbs,BRIGHT. Turn on a blinker and THAT light gets full juice.The other light stays restricted unless the brake is being applied,then both lights get full juice but one is blinking.
There is a little plug in thingy that allows the brake lights to flash a few times before going on steady.You can pop it out if you don`t want the warning flash.[I like it] The wires are fully labeled and come with all the connectors and tie wraps.It also comes with a resistor block if you are using LED lights.It just plugs in to the 4710.I connected the wires at the factory plug for the tailight under the seat.The instructions are complete and straightforward. When I ordered the 4710 I also bought a set of the small LED SilverBullets which come in single or dual filament and red or amber.They were $120 for dual/red.You could use the dual amber up front for turn/running or use them to replace your stockers and wire the second element to a "hot with key on" wire in the headlight.
Thats the beauty of this thing in the back.You get 3 tailights,3 brake lights and blinkers all from this controller.It fits nicely on the little shelf next to the battery.