bedside removal question

[airborne3502]

hey guys,

I'm taking my SWB fleetside bed apart. sort of....

I've removed the tailgate..

I've removed the front bed panel...

I've removed the inner wheel panels...

I've removed all of the bed bolts and the bedsides still feel pretty attached in the back.

What did I miss? Are they welded back there?

While I've got ya'll here...

Where/How do I disconnect the wiring to the tailight lenses & reverse lights?

Thanks in advance