how to replace glow plug on 2004 Dodge Sprinter 2500

how do i replace the glow plug

Asked by for the 2004 Dodge Sprinter 2500
Disconnect the negative battery cable.
Remove the engine cover.Use special tool #9286 pliers to unplug the glow plug wiring harness connector(s) at the glow plug. Remove the glow plug(s)
are there more than 1 glow plugs
one per cylinder