I am over 50 my self... so I would say No... its not an age thing..
one switch with one set of 3 screws (8444) you only use two of them..
if you connect your lights up as you said... direct to the battery and they work, all you need to do is fit the switch in the negative side of the circuit using the middle and bottom screw...
the winch is a little more complicated ...
switch with two sets of 3 screws (8445) all 6 screws are used...
motor get connected to the middle of each block of 3 screws...
positive from the battery gets connected to the top of each block of 3 screws ...
negative from the battery gets connected to the bottom of each block of 3 screws...
that might be a little bit easier..!!