The odometer is electronic, there is a plug in on the back of the speedometer, however the plugin for the odometer also may power other controls, so this may not be a good idea.
I dont know why your trying to stop the odometer but your out of luck the computer keeps track of your information your odometer is just a read out like a monitor
The 2004 Toyota Tundra has 24 valves.
The 2004 Toyota Tundra has a V6 engine.
The 2004 Toyota Tundra is a gas-powered vehicle.
The 2004 Toyota Tundra has a 5-speed manual.
The 2004 Toyota Tundra is 18 ft. 2.3 in. (218.3 in.) long.
The 2004 Toyota Tundra runs on regular unleaded.
The 2004 Toyota Tundra's turning circle is 44.9 ft..
The height of the 2004 Toyota Tundra is 5 ft. 10.5 in. (70.5 in.).
The 2004 Toyota Tundra has double overhead cam (DOHC).
The ground clearance of the 2004 Toyota Tundra is 0 ft. 10.4 in. (10.4 in.).
The 2004 Toyota Tundra has a 3 yr./ 36000 mi. basic warranty.
The 2004 Toyota Tundra has a 10 ft. 8.3 in. (128.3 in.) wheel base.