Not such a dumb question Joe. Never have looked at block heater wiring (in terms of gauge of wire, fused, etc.) but might want to do that before extending. One would have to be really careful in running it to the back, with regard to rubbing, shorting out, etc. I have an extra 100' extension cord I will give you. As Foxy005 indicated, prolly easier. If that's the project that you want to do however, you have way to much time on your hands. Isn't there any fishing or drinking to be done at this time of the year?