Bit of an unexpectedly rough response in my opinion but thanks for taking the effort to reply none the less.
You are of course correct, the most likely course of solving the problem will be through the seller. However, most of my comments/questions were based around the wiring on the car side and there is/was an off chance that it might be something that I have missed or is not clear from the units operational manual but could have been cleared up by someone who has come across this issue before.
You will note that I haven't come running on here crying as soon as it didn't work, I tried to resolve the issue myself (looking at wiring diagrams found on here), then searched the forums for information as evident by my above post, and then asked the question to the masses in conjunction with emailing the seller. I actually thought that was a relatively pragmatic approach.
With regard to starting a new thread, all of the other forums I frequent actually prefer this so as not to dilute the specific topic of another thread or have a thread that's 2000 pages, in a forum with 5 topics because everyone is scared to start a new thread; making it difficult to find specific answers. This is obviously not the case here so your advise on the matter will be noted for next time.
Lastly, I have taken the time to do an initial review of the unit in the 37 page long GPS head unit thread for the betterment of others on this site. Whilst I don't expect a medal for doing this a little bit of politeness wouldn't hurt when accidentally contravening a new thread rule you so eagerly pointed out.
Maybe you should change the text under your avatar from Pyromaniac to Megalomaniac