Adding a Factory
Hand Throttle
Last Update: March 2, 2006
The 1991 to 1997 Toyota Land Cruiser FZJ80 was designed from the factory by Toyota to accept a hand throttle.   However, Toyota never included
this option on U.S. spec vehicles.    This isn't  too surprising given who most Land Cruisers were sold to from the dealer.  But it was an option on
overseas models of the Land Cruiser 80 series.

The purpose of the hand throttle is to allow the engine speed to be set at a higher rpm while idling to allow the alternator to charge the battery
during winching operations and other situations where higher rpm was needed, but the driver did not want to sit in the vehicle and manually
operate the foot pedal.

Most U.S. spec Land Cruisers have the required brackets already installed and only a the throttle cable is needed to make this option work.  
Fortunately, several folks now import this part from overseas.  One source is Slee Off Road, a major Land Cruiser aftermarket parts manufacture.   
Slee sells the cable for approximately $51 as of the time I purchased it.   It can be found
here on their website.

Slee was also kind enough to include installation instructions both in the package and on his website.

For most 91-97 Land Cruisers, all that is needed is the throttle cable itself, however, Slee has found that for some reason, some 1993 models
don't have the necessarily bracket on the gas pedal and a different gas pedal may be needed to make it work.
These are the parts and instruction as they come from Slee Off Road.
The stock location of the hand throttle is directly under the key ignition switch.   The hole is normally plugged with a plastic cap, but is very easily removed.
To install the throttle cable, you can remove the panel under the dash to access the pedal brackets.
This photo shows the cable attached to the factory installed brackets.
Once installed on the throttle pedal brackets, the other end is passed through the factory hole in the dash and a nut is threaded over to hold it in place.  
Easy as that.
To raise the rpms, the hand throttle is pulled.  The pull stroke is very short.  The throttle is designed so that it's nearly impossible to over-rev the engine.   Under no load,
the rpms can be controlled up to around 4000-4500 rpm.   But under a load from the alternator, the range is probably a bit less.   The hand throttle can be locked closed
so that it can't be accidently pulled, by simply twisting the knob.