HPA systems are controlled via electronic triggers, so proper wiring is essential for functionality. However, wires are very fragile without protection and may deteriorate quickly. The POLARSTAR Fusion Engine Wire Harness REV. 2, 18 addresses this issue.
This wire harness works with any REV2 or REV3 FCU PolarStar system. You can cover your circuitry with a layer of nylon mesh sheath. This way, the wires are kept safe from external damage.
You can also use this wire harness with Amoeba kits. The 24 AWG wire has excellent continuity, and this length is perfect for larger airsoft guns such as rifles.