Install is very easy. Go to
Gauge Installations at DieselManor- 1999-2003 7.3L Powerstroke
for install instructions. Ignore most of those instructions for the other gauges, and worry only about the simple tranny temp gauge instructions.
If you have a two-gauge mount on the A-Pillar, one option is keep your current mount and add the new gauge in a mount that goes on the steering column. You can get it at any outfit that sells gauges and gauge mounts. Mine (and almost all others) is made by Autometer. You can see it at
Autometer Steering Column Gauge Mounts at DieselManor
But one important item. Banks pyrometers are often installed with the thermocouple in the downpipe - i.e., post-turbo. Not good. Awful, in fact. If that's what you have, move the thermocouple to the exhaust manifold on the driver's side. Crawl under the truck with your head under the oil filter and look up to where the exhaust manifold and the up pipe connect. Drill the manifold about an inch from the connection to the up pipe, then use the same clamp that was around the downpipe to clamp it into the manifold. Then with a pre-turbo pyrometer, use 1,250° pre-turbo EGT as your red line.
Or if your truck has a Banks downpipe with the welded-in bung for the post-turbo thermocouple, then plug that hole with a pipe plug, and drill and tap a new hole in the manifold. (It's very easy to drill and tap cast iron.)
One more option. The pyrometer is the most important gauge when towing in mountains, so I have my prometer on the steering column where it's easiest to see at a glance, and I have three other gauges on the A-Pillar.