Speed input on 2nd Gen

I have the pioneer Avic Z2 in my 05. I am looking for what wire on my Taco that I use for speed input. I know it's the pink wire on the HU... But where does that go?

While I'm at it... Anyone familiar with the Z2? I have an error on my screen:

"Playback error due to irregular temperature. Please remove the disk.".

I've power cycled it... Put cd's in and out... Factory reset... Even swapped the hard drive. Ideas? Even though it's old... It's big $ to replace!

 

bump.... have the entire unit removed at this point... looks like my Dash vomited!!!!

 

Never seen an error like that. I dont think $230 is worth it at all for the repair! Use that money towards a new unit. If you dont need navi, you can get an avh model (just below avic) that still does dvd, bluetooth, and hd radio for around $300. You can also add navi to those models if you wish. But in all honesty, the Z2 is an old unit... sorry to say, but I think its time to retire that unit. Looks like its just giving up finally. Im surprised it lasted this long

 

The features I want are AM/FM/CD/DVD/BU CAM/NAVI, and USB on front. Blue tooth is nice, SAT radio don't care. NAVI on the Z2 has always SUCKED! I guess I'm off to the Amazon's etc!

I value your opinion. Thanks for your assistance and honesty.

 

I really like this years kenwoods functions, Plus Garmin is the best nav system out imo.

 

Thank You all.... New HU on order... fingers crossed! Anyone in the maket for a old partially working Z2!?!?!?!? HAHAHA