For the cart I built for the 2005 robot I used the electronics from our 2002 robot which we had to disassemble because we ran out of room in the shop

. And we wired up the cart like the robot. For the lights bells and whistles we wired up a control panel full of 2 and 3 way switches. Everything we used went to a spike relay and to the fuse panel just like you would for a robot. It was safe and reliable and it worked for us so we went with that. The electronics board took less than a week to build and about 3 days to work out the bugs for the programming I know nothing about programing so we had our lead programmer do his thing it took him less than an hour to do.