just my 2 cents... but if you use black (UV protected) zip ties instead of clear ones (not UV protected), they last longer out in the sun. nothing sucks quite like having zip ties break and cables hanging everywhere.

 ya, i didn't check to see where you were from first. i live in the british columbia interior and it is a semi-desert and crazy hot in summer.

 Haha, fair enough, to be honest Ive never had any zipties break, plus, its hardly ever sunny in Wales