I finished up the audio install last night.  I decided to add an on/off switch to the remote wire running to the amp.

This will allow me to turn off the amp all together when I remove the subs from the rear since I will need to remove them for up north camping trips or if I need to haul anything.

Thanks to Ducky for suggesting the on/off switch.

I got the headunit (Pioneer DEH-P6900UB) installed yesterday along with the amp (JL Audio 500/1).

I thought the install was going to be simple since the Tiguan is based on the MK5 platform.  I thought wrong.  It took about an hour and a half just to get the power wire through the firewall.

I still need to install the subs (Two 12 inch JL Audio W3V2′s in a sealed box), but that won’t take more than ten minutes.  I ran out of time as I had other plans later in the day.

I should be able to get the subs in sometime this week.  I will post photos after the install is complete.