A replacement kit for replacing an electrical device coupled to a vehicle via a plurality of vehicle lead wires. Said adhesive formulations can be used in applications in which it is important to prevent or minimize migration of adhesive components when the adhesive layer is in direct or indirect contact with substrates that are sensitive thereto. The first and second variable speed driver assemblies are preferably high speed, variable speed electric motor assemblies each having a motor body, a motor housing, and a motor shaft with one or more impellers directly and rigidly coupled to the motor shaft via a sacrificial rigid shaft coupling. The dummy bonding pad is on the dielectric layer of the non-device region. The crossover passage includes a crossover compression valve and a crossover expansion valve defining a pressure chamber therebetween. The piping is first bent vertically downward and then vertically upward, and this forms a water containing trap in the piping.