this picture is looking at the in-cabin fuse box

i have got to this point of the install and am now stuck. the #3 and #5 spots are already occupied by what i'm assuming is the stereo and alarm. the #1 spot is the only one that is open. i was thinking of splicing the foglight wires into one plug, but figured that would most likely overload the circuit...right?

anyone else installed oem foglights with a stereo and alarm and remember what the deal was here?

thanks.