SeventyGTX
Full Access Member
I'd suggest no more than about 8 inches to one side or the other, though most factory installations (not just Jeep) have them to the left. Any further away and you run the risk of your trailer's harness being too short to reach the plug or the harness being pulled out of the plug on sharp turns.
This is the way my factory install looks - from edge of receiver to center of plug is about 8 inches:
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Bob
Wow, that thing is way clean underneath for a rust belt vehicle.