I just purchased a TC35D which is a step up from yours. I have a sun canopy in which I mounted two aux. lights in the upper corners, purchased at a local tractor supply store ( about $20.00 ). I then purchased a headlight rocker switch from New Holland that fits nicely right into the panels on the dash ( about $13.00 ). Heres where the fun starts. I ran a hot wire ( used 12 guage) from the battery to the switch. Because this switch has five terminals in the rear, I connected the hot ( power ) lead to terminal #5. The ground terminal is #7, which was grounded to the frame. The lead to the lights has an inline fuse and went to Terminal #6. To make the switch illuminate at night, I tapped the instrument panel light wire and connected that lead to Terminal #2 ( The blue wire going into the instrument panel marked 054 was the one used ). To access these wires and make the job easier, remove the instrument panel ( two screws in front) and the lower left black panel ( when sitting in seat) . Raise your loader, if you have one, all the way up to gain access under the hood. Everything should be o.k. I hope this helps.