Right side
If you look at the picture that Andy Karmy put up. We put ours in much the same place for the rear jacks, then put the front ones at the front of the forward arm rest you also see in his picture. This keep the Jacks in front of you so you can see them while in flight and not have to turn your head much to see them or reach behind you to manipulate them. You also most often exit from the left side, so when you want to get out you can just put the head set or helmet over the right hand rail of the canopy guide. We just made covers to go over the bottom of the Jacks and the wiring on them. We did put the PTT on the left side in the back seat, just in case the driver was in the back with his right hand on the stick. In the front we put one PTT over on the throttle panel as a back-up to the primary on the stick just in case it was ever needed for the number one seat. The wiring is easy to run down and under the arm rests from those two spots.. Just what we did, it's your call.. R.E.A. III #80888