Hi all,
Some good news - it's all done and working!
I used pretty much most of the loom supplied with it and only had to splice in 1x cable - solid yellow for Amp power which I took from the power to the radio.
Sound quality is excellent and I'm really pleased - here here to the old WD40 once again!
And I left the original wiring in as well if ever needed again in the future.
Test bed...
And final result.
Thanks to all who replied on this one for the help and pointers given - got there in the end and that's now it - no more mods to do as she's now as I want her!
Regards
TMW