This should be an easy project for the home gamers out there. If you can cut wire and crimp ends on then thats all the skill you need. Or ask a friendly mechanic and they should be able to do it in under 2 minutes.
1. Remove fuse panel cover, locate red relay
2. Remove red relay, you are going to be bypassing the ignition circuit, the larger pins are the ones involved.
3. Insert wire with male spade ends (non shielded type) into the two slots on the top right, as shown below. I recommend using wire no smaller than 16awg as this circuit is rated for a whopping 15A, pretty skookum!
4. Now you have 1 power outlet thats not on IGN and it cost you 50¢.
This controls the rearward power outlet, the orange ring will not light up until the ignition is turned on.
I ghetto jammed the wire in there for illustration purposes, yes it will work with it just jammed in there and should last but adding the male spade ends will make it much more secure and professional looking if a mechanic ever peeks in there.
You do not need to remove the dash panel but it does help and is removed with 2 T25 torx bits, one behind the fuse panel cover and one under a flip down cover to the front right.
P.S
Don't mind the black wires to the right, your van wont have those in there. Thats for my secret electronicals (dash cam/scanguage)
and DONT lose that relay, they are not cheap to replace or easy to come by if you lose it.