Question! I have 5 auxiliary switches that I just installed for future projects.......Can I wire 5 small 3 prong switches (ground) (load) (power) by having all the power wires and grounds run to the same power and ground? And then have my loads go to whatever aftermarket crap I install? Or will sharing a ground cause backfeed? I believe they'll all pull the same amount of power no matter the load because all they power are the LEDs on the switches...here's a pic to give you an idea of what I have going on (in the middle of being wired)

 

Can never assume that. The grounds will be fine as they are only for the led in switch. Your feeds are dictated by the load.

 

here is my set up coming from the battery to the relays. One thick wire (I forget which gauge) to a fuse box I found at the local auto parts store.


The ground wires coming off the relays all connect to one bolt- That is 4 seperate wires run to one bolt.
The ground wires coming off the back of the switches are all piggybacked of each other and run to on point-instead of having 4 wires run to one bolt the switches connect and only one is connected to a grounding bolt.