[8D] Hiya, if you want to control the lights from a transmitter then I personaly would try and us a micro switch someway. However, as remote control of the lights is not important to me I use a simple toggle on/off switch on the Tank itself, thus saving the expense, weight of a servo and a radio channel. I never have enough channels! [sm=teeth_smile.gif] If I ever run out of channels, it might happen yet, I have seen some guys using a small single channel txrx unit available from Maplin electronics UK, they are like radio shack US I think, they are normally used to switch single items remotely like garage lights etc. but I haven't tried them myself yet. Do you have any other servos in use on the Tank at the moment? Like controlling the Turret or cannon? If you do, you could use the end of the "sweep" of a servo already in use to switch the lights on, and when you return, off... I am waiting/can't wait on a new Tamiya King Hauler to arrive for my latest project, 6x6 M35A2 1:12 trail truck in desert yellow. Also going to fit a driven front axle with mud terrain tyres all round and do the USMC M35A2 conversion to the body.