Re: Need a switched power source to tap...
Im not sure of the amps on the acc oultets I think one has more amps then the other(The dealer put a cig plug in my left one)
Only way to check is to see what fuse is used by looking at the fuse box)
I originaly had the fridge hooked up to the cluster that is capped off for the trailering brake that is located under dash to left of wheel towards the radio.
Easy to find and theres a 12 volt constant there.
When I hooked up a trailering brake I moved the fridge wire to acc oulet I think the lighter was 20 amps and the right acc was 15 amps Im not sure though.(taped into right one and I havent had a problem with the fridge yet)Im Kinda sure the + in the cluster is 30amps.
It doesnt matter that your power wire is constant it will be switched on and off by the relay. the switch wire(ign or ign and acc) isnt powerfull enough to run a device  it just triggers the relay to allow 12volt wire to power device.
As for tapping into the green/white wire ,you could use one of those in line tappers at any auto store just get the correct gauge. that what I used at the acc plug and the rear wiper switch.For the green /white wire I just un did the electrical tape from that wire where the installer cut into it for my aftermarket auto start.
You could get the 12volt power wire off the battery if the wire is needed under hood,just get a eye loop and put it on the battery terminal(use a fuse as close to the battery as posible and make sure you leave the original terminal nut there and put the eye loop on top then use another 10mm nut on top of that. do not try to remove original nut it only loosens to remove terminal you cant get the eye loop under it without damaging the stupid set up of the terminals.
Good luck  I hope I didnt over explain this ?
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