Greetings sir . If your looking for a simple , neat & durable solution then I would suggest using some 1/4 or 3/8 diameter steel brake lines . There are various lengths available & many have coatings to prevent premature rust . Just bend them to the shape & contours you need and attach them with whatever means thats suitable then you dont have to worry about snagging the wires with anything . The flared ends of the lines provide a smooth radius and prevents chaffing of the wires , I just cut the nuts of or grind the off .
Mike