Where is the 7 ignition coil on a e250 year 2001?

The 2001 E250 uses a coil-on-plug system, meaning each spark plug has its own ignition coil directly mounted on top of it. There isn't a separate "7th ignition coil" in the way some older vehicles had a single distributor with multiple coil outputs.

To find the coil for a specific cylinder, you'll need to consult a repair manual or a wiring diagram specific to your 2001 E250's engine (the engine code will help narrow this down). These diagrams will show the cylinder number associated with each coil's location on the engine.