A flexible cable guide member and assembly, the assembly including first and second cable guide members each having a curved wall with open ends. The mobile device includes a hand-held display unit. The electronic circuit is driven to generate the sequence of control signals in a forward and reverse direction along the same circuit path. The list may be displayed on a user’s TV screen during or immediately after a show. As a result the system can be advantageously and optimally adapted to the spatial characteristics within the engine compartment of a motor vehicle. The process requires maintaining a positive product gas temperature differential.