RRAP does this:
"Retained and Resumeable Accessory Power". When you turn off the engine and take the key out you should be able to operate windows and radio and other accessory powered features in the car for a short while, right? At least until you open the driver's door. Subaru doesn't have this feature for my car either. RRAP does this and more. It has the timed Accessory power with door open cut-off as well. But also an option to hookup so unlocking the car by remote starts Accessory power without putting key in switch. You can also configure it to ignore the door opening and keep on supplying power so you can get it, close a forgotten window, and leave again without having to use the key. And a feature that when you press remote lock, it cuts Accessory power. Along with this kit comes a tip on how to cut and move one wire under the dash so that all windows will work when Accessory power is on, instead of having to depend on Ignition power being on - the factory default. I never did get the reason for that.
RRAP is very labour intensive for me and I cannot justify doing a group buy on the current design offering a discount.
I don't really even promote them anymore at full price either... kinda "hide" the order page.
It's like twist my arm and I'll make one.
However, I don't like holding back people from getting enjoyment out of RRAP, either.
Maybe I should just publish the existing design as open source and let people have at it themselves.
It is loosely based off a very commonly available timer kit (through-hole PCB and parts) but with some surface patch modifications for custom latching purposes. This comes with a huge caveat: You'd have to be comfortable with soldering of course, and need some heavy duty crimpers for relay sockets.. a couple heavy duty gauge 3M wire taps to attach to car... You don't want to cut corners on passing some potentially heavy ACC current through flimsy connections (meltdown potential).
If I were to continue enthusiastically with RRAP then it would be on a refreshed design to make it microcontroller based, then I wouldn't hate making them as much. Problem is I'm currently almost over my head fulfilling Tap Turn with its current success.