Still not getting what you are trying to do. Why are you mixing RJ45 and RJ11? Are you attempting communication or is this just for power or something simpler?
Pin outs for both connectors using standard color coded wires can be found on Wikipedia, but the only reason you would need the standard pin-outs is for Phone or Ethernet, the two can't really be mixed. Serial communication maybe, but then you would be using RS232 or RS485 and then it wouldn't matter what you used so long as the TX and RX wires are swapped and connected at both ends.