986 S Radio not turning on after wires been unplugged
 

Hi all my car went into porsche and they had to do some cable testing they took out my wiring that i ran to my pioneer radio to the Amp box down in the footwell but I cant recall which slot I had that plugged into(I had issues with this previously when installing the radio and it was not getting power) is there a particular slow that the 15 amp needs to be put into?