KNEXTEC LLC was founded by Wayne Shafer in 2010. KNEXTEC LLC Specializes in high-quality LED assemblies, wire harness design and manufacturing, cable assembly prototyping and manufacturing. Whether your company needs harnesses for standard, or custom applications, KNEXTEC can help with all phases of the product. While our wire harness capabilities are vast, our focus over the years has become fast-turnaround and low-volume cable assembly projects that require high quality standards of IPC/WHMA-A-620 Revision C The IPC/WHMA-A-620 Revision C provides the electronics industry with the most current criteria for the performance and acceptance of cable and wire harness assemblies. This revision includes a synergy with IPC-A-610 and IPC-J-STD-001, aligning many of the requirements that are in common with IPC/WHMA-A-620.