Where do you refill automatic transmission fluid on a 1989 ford econoline 350?

The automatic transmission fluid (ATF) dipstick is located on the driver's side of the transmission, near the front of the vehicle. It is a long, thin tube with a red or orange cap. To refill the ATF, remove the cap and insert a funnel into the dipstick tube. Add ATF until the level reaches the "FULL" mark on the dipstick. Be sure to use the type of ATF specified in your owner's manual.