Park lamps iluminate with brakes

This isn't really the thread for it, but I've been tinkering away with her for the last 2 months. Rebuilt carb, new fuel pump, electronic distributor, head gasket, de-gunked the rocker shaft and reinstalled/lashed valves, New fuel tank, new sending unit, rebuilt the cluster.... She's looking better every day! Hasn't been on the road since '04.