Question Fuel cut off switch for 03 Tacoma

[firsttaco]

I just purchased an 03 Tacoma and would like to add a fuel cut off switch somewhere around the Drivers seat as I can see the wire loom for the fuel tank running down the rail of the truck on this side. Does any one know what color the fuel pump wire is so I can splice the switch in? This is an awesome anti-theft device that's cheap and relatively easy to do. I'm just looking for the correct wire. Great forum you guys have here! Thanks