Where is the transmission fluid dipstick on a 1992 ford 350 engine located?

The 1992 Ford 350 engine does not have a transmission fluid dipstick. Instead, it uses a "fill plug" to check the transmission fluid level. The fill plug is located on the side of the transmission pan. To check the transmission fluid level, remove the fill plug and insert your finger into the hole. The fluid should be at the level of the bottom of the hole. If the fluid is low, add transmission fluid until it reaches the proper level.