Telco Aerial Booster AT36

Hi all.....the red and black wires on the AT36 aerial box have
 both come adrift .....i think I must have dragged the cover of the unit off
as I recovered something from top shelf of the wardrobe ..
One wire was soldered to a peg coming out of the small metal box
 whilst the other was soldered to the back of the box.
Would I be right in thinking that it's the red wire to the peg and the black wire
to the back of the box ..
Many thanks to anyone who can assist .