Aircraft cable routing system and method of installation thereof

A method of installing cables into an aircraft, the method comprising:

• providing a routing fixture on a structural component of an aircraft, wherein the routing fixture defines a primary channel;
• providing a dielectric liner separately from the routing fixture, wherein the dielectric liner is for insertion into the primary channel and defines at least two secondary channels;
• routing a first cable in a first secondary channel of the dielectric liner;
• routing a second cable in a second secondary channel of the dielectric liner;
• inserting the dielectric liner into the primary channel after the routing a first cable and the routing a second cable, such that the at least two secondary channels are contained within the primary channel.