I have a slightly different setup.
Initially used the RAM Seat Mount, the thing is a single flexible aluminum stick that ultimately gets really wobbly and isn't as secure as I'd like. I drive a Diesel VW with hard engine mounts, so the cabin shakes quite a bit and I really abuse my car, never sexually though. It also made it so my front seat couldn't pivot forward, a big problem for Beetles and their stupid triangle seat mounts.
I didn't want to do a custom mount at the time. This was pre-iPad mini or something and I knew that a solution for the iPad 2 would need to be redone for the later versions.
I took some 2x10s or something and shoved them into the CD slot. Glued and screwed them down, and then bolted in a male 1/2" ball mount. For this you simply pick a RAM case and mount that sucker to the ball. Very secure, won't fly away during your next ten car pileup.
Stereo:
- iPad cable to RCA & 5V USB power inside the dash. (Apple cable)
- RCA to a volume knob/PRE-AMP from Scosche. This gives me volume control. Knob is mounted on very bottom of console on left, right in front of fingers when my hand is on the shifter. This also boosts the signal to appear as if it is coming from a HU so no noise/gain issues.
- RCA to a $50 equalizer on Amazon (Clarion?) It is excellent.
- EQ has line out to Alpine F?M?300 amp for the fronts and rears.
- Old Alpine M?F?250 wired to drive a single cheap Kicker sub in a box in the trunk. Hits hard enough for me.
Benefits of this solution: I can unscrew and chuck it in the back seat. iPad is likewise removable. It leaves a wooden block (now painted black) so there's nothing bright or shiny to steal. Also, you don't have to deal with stupid Head Units with techno strobe lights, dumb colors, or stupid software/buttons. This is a pure hardware solution, no software, using dedicated hardware for each step. Hence the equalizer. All of this is hidden in glove box or under panels.
This setup is old and I've been overseas for a long time. When I get back I plan on getting a TP-Link WR702N travel router that has been modded to be an airplay receiver (check amazon) so I can just hit a button on my phone and stream music. I'll probably get the mount too, not sure. I honestly want to go back to the stock classic radio and just keep it there for looks/added crappiness. A good idea would be to get a second scosche volume know and wire it to the subwoofer to control that too.
I can't find the name of this cable or even find it on Amazon/google, it may be by another big name audio company. It has an inline fuse, power, ground, and remote wiring, RCA inputs and high/low male outputs I believe.
I'm very happy with the setup, but I've since transitioned to the iPhone 6+ only, so I'm not sure how to use this moving forward. A possible solution is just to dump a cheap iPad 2/3 w/ 3G in there and call it a day since I only use it for tunes and maps.
http://i.imgur.com/AZEI6RG.jpg
http://i.imgur.com/nNFdCX2.jpg