Aftermarket Stereo = No Nav, No Energy Monitor?

I'll preface this post saying that the new radio is worth losing the ancient GPS and the slow Energy Monitor. If I have to choose, it's the new radio.

I bought and installed a Pioneer MVH-P8300BT (the Parrot Bluetooth BLOWS, btw; WAY too much echo for the other party) in the stealth pocket. I'm almost done with the install. I also installed the compatible Pioneer HD Radio unit, the SWI-PS (steering wheel controls), and PAC TATO (I have the JVC audio). There are a lot of boxes and little space, so I decided to take out the CD changer, cassette player and radio...at least the bulk of it. I removed the face so it can still look natural...kind of a hidden compartment.

The sound is fantastic. I no longer have to hear the crunchie crunchie sound I got out of my piece of crap cassette adapter when I listen to my iPhone 4 (which works flawlessly over USB with this HU).

To my point, my screen doesn't show me squat now. My climate control is messed up, though I know I need to get a 68ohm resistor to fix that. My Energy Monitor is blank. My map says "The external system is not connected."

My A/C still works through the steering wheel controls, I just don't see any settings and can't control it manually (at least I'll stay warm).

Two questions:
1. Can I get functionality back to the screen?
2. If not, is there anything else I can do to the screen that's awesome (hook up Nintendo, put in a fish tank, use it as a permanent rear camera or multiple camera system, etc.) that will make me feel better about disabling all the cool Prius features?

In all my prep and searching I haven't seen this as a prevalent problem; maybe it's something I screwed up (did I knock a connection loose on the back of the screen, maybe? *oh I am SO checking that tomorrow!*)

 

By the way, the Pioneer MVH-P8300BT was too wide to fit in the stealth pocket (I don't care if that's not what it's called, dammit). I had to snap off each side of the face then file down the sharp edges. It's designed like those edges were meant to be broken off. They're completely separate and snap off pretty easy, and once snapped off, it fit almost perfectly. I'm going to cut a little bit off the top of the stealth pocket, about 1/4" to make it perfect.

 

Thanks for reading my post before assuming I didn't search, exstudent. I browsed through 17 pages and, confirming my searching, didn't find someone with the same problem as I. I have the JBL audio with Nav, which is totally unrelated to the post you recommended.

After reading some of the posts, I saw about 2 Best Kits harnesses that could splice together and still power the factory radio. I removed my radio. It no longer exists in the dash, so there's nothing to plug into. How do people get a Double-DIN unit in if they have to connect to their factory radio?

Will doing the 68ohm resistor mod make the display realize it's connected to the nav system under my seat or is the factory radio the computer?

 

I verified this morning that all connections to the back of the display are secure. No change.

 

I did F8L's install, with my single-DIN in the stealth pocket. I took out the factory radio so there was room for all the connectors and adaptors.

PAC-TATO (JBL Amp Turn-On)
SWI-PS (Steering Wheel Controls for Pioneer)
GEX-P20HD (Pioneer HD Radio Tuner)

 

I installed the 68ohm resistor last night.

My system is now back to perfect! My Nav works, energy monitor works, climate controls work.

For anyone else's information: If you remove the factory stereo and you have the JBL system with Nav, doing the 68ohm resistor trick makes everything work, not just the climate controls. WOO HOO!

This was a fun project to do. My first experience installing car audio and a lot easier than I thought it would be.