Harness Board Components - Cirris Systems Corp. Accessories | Harness Board Components . Harness Board Components . Instruments for building harness boards, integrating fixturing, and creating a flexible test system. Mounting Brackets. Reusable components for harness boards. Test Blocks. Reusable components for harness boards. Quick-Build Harness Board System - Panduit | DigiKey Panduit's Quick-Build harness board system is a modular, reusable solution that consists of 1’ X 1’ grid tiles and specially designed, repositionable accessories that improve the productivity of wire harness assembly builds by up to 18%.