GL1500 Wired Fm Transmitter/Modulator

I realise this subject has been done almost to death, but I purchased one last year and just recently got around to fitting it....
http://www.ebay.co.uk/itm/Motorhome...d-DVD-Audio-/230835572819?hash=item35bedf5053

This is the result
http://www.youtube.com/watch?v=XUp9Z1c1owA&feature=youtu.be


Having spent last weekend in the VERY hilly region of Wales, I found the modulator to perform faultlessly