x-over and briding connection help?

[Stewart1000]

i installed the amp today, took me about 40 minutes!!!
I dont know what people are talkign about when they say its hard, i have t running speakers but nto the sub yet but thats only a matter of time, only thing left is to drill through the gromit and feed the wire through, at the moment its just going over the door, shoudl add 5min to the job but im taking a rest, its a bit hot.

ok now the amp im using is a 4ch 60w/channel
one side has these connections
12+ main
rem remote
gnd earth-

imput 1:
left-
left+
right-
right+
imput 2:
left-
left+
right-
right+


other side had these...
imput 1: left
imput 1: right
imput 2: left
imput 2: right
x-over output 1
x-over output 2

all of the above from impt 1 to x-over output 2 are RCA connections...
how do i plug in the sub?
does it go into one of the corss over outputs?

how do i bridge a connection, just run a wire from imput 1 left to imput 2 left and same for right? and then fron that wire i run the sub?

p.s. i want to run the sub and the front speakers off the amp and if possible the rear speakers aswell.
thanks!