PLG ground coils offering three functions, namely propulsion, levitation and guidance, used on superconducting maglev systems have been developed for construction by RTRI with a view to reducing cost by cutting the required overall number of coils. PLG coils however require guidance circuits made up of high voltage cables connecting facing coils. This cable installation is complicated and intricate. A model guideway was built therefore in order to investigate ways to reduce wiring. Tests were then performed with the optimal wiring solutions discovered, on a full size model. Results helped determine the suitable section size for duct lines, the required length of connection cables, the appropriate wiring procedures and an effective wiring layout. The outcome of these tests indicate that there are prospects for a problem-free approach to PLG coil cable wiring.