AccuAir's replacement parts will include wiring harnesses, sensors, linkage, hardware, relays, and power supply kits. All of these kits can be found in various AccuAir branded kits, but in the event, you are needing to replace them, we have you covered! VU4 Solenoid Service Kit. AccuAir. 3 reviews. $44.99. 20ft USB Harness for TouchPad. AccuAir.