91KA wrote:the headunit support keeps clicking in if i loosen on side.
are you trying to pull the HU out of the cage, or pull the cage and HU out? the latter would be the easiest, plus if you are replacing the HU with a different brand you wont be able to use that cage anyway. just pull the bezel off (it just snaps off) and that exposes the 4 screws you need to use to release the dash kit (or ISO mounts, depending on how it was installed)
as for tips when installing, make sure you solder and tape every wire, and just to be safe i usually make a new ground.