1992 dashboard removal
 

1992 2dr explorer 4x4 im trying to take the dash out, ive removed all the trim panels, the intrument cluster, all bolts that i can see, and several elec. connections, heres my problem, the passenger side is loose and reasdy for removal, the ecm and all that is unhooked, but i cant seem to find the right way to dissconnect the main wire harness from the firewall and also the wire next to it, are they connected in the engine compartment to the firewall? what are the next steps i need to take to ensure safe removal of my dash? also how many connections are going to be on the column when its ready to come out?