Touareg: 2008 V8
Join Date: Jun 2015
Location: Oregon, USA
Second Vehicle: 2007 V6
Thanked 81 Times in 80 Posts
I get not wanting to drill holes, but once you do (and use the proper sealant under the camera frame) it will be a much better setup with minimal wires exposed (I literally have one inch of wire going into the trailers side from the camera). A disclaimer here is that I paid someone to do it for this reason (like you didn't want to do the drilling part and didn't understand the power source at the time).
Mine is located directly about the upper running light. I think this allows one to see where this light was mounted so a similar hole can be drilled vertically above the existing hole.
The adhesive would work for a while, but the TT really bounces back there and things that are not bolted have a tendency to fall...that isn't a cheap camera...