How to use your Honeywell (ademco) 6270 Keypad to control X10 lights or devices

The 6270 Keypad by Honeywell has a built in X10 switching feature, accessed by the "Lighting" button on the main menu screen.  You need only to replace the standard transformer that powers the alarm panel with a 1361X10N Transformer/X-10 Interface kit.   The kit is actually just another transformer with 5 screw terminal instead of 2.  Simply locate the standard power  transformer, and replace it with the X-10 transformer.  Chances are there will not be enough condutors in the cable connecting you transformer to the panel.  You should run a second cable (such as 22-4) along side the existing cable, if this is the case.  Connect the cables to the new transformer and to the wires from the kit to the 8 pin connector on the panel.  Dont worry about the actual color of the wires connected to transformer.  Just make sure they are connected to the proper color on the 8 pin connector.