I use "OptoGLoII" from http://www.cliftech.com you can purchase the kit which you just need to drill the holes and install the components. Only $25. You will need a batt harness and a glow driver harness and a servo harness. It is an optically Isolated rc switch so there is no cuurent draw from your battery to power the glow plug. You can order a completely assembled on for $35 from Electronic Model System. http://www.emsjomar.com/highly recommend the one you build yourself. You get to see exactly how the circuit works. You can set it to go on at the low end of the signal or the high end. I have mine set up to go on @0 throttle and go off after 1/3rd throttle to help prevent dead sticks with my inverted engine, I can reverse that if I need to reverse the channel for other reasons.