Heated grips power connection - help!

[jadejordan]

Hi - I am going to fit some Oxford Original Headed grips to my FZ1 (2007) and want to connect them to an ignition circuit so they switch off when the ignition is turned of. ( had them on battery on last bike and kept forgetting to switch of and often had flat battery)

Does any one know the best place / circuit to connect them to as it says in the manual do not connect to light or horn circuits as it needs up to 4a.

I am useless with electrics so an idiots guide or pictures would be appreciated.

Thanks