В©2018 fuseboxgroup.com - Headboard Brackets . .. included). G) Lumbar Support. Round Tube (1) and wrenches (2). H) Sync-Cord ‡. Misc Parts (not included):. Headboard Bracket. Components: I). Headboard Bracket. (2). J). T-Bracket . The Sync Cord connects the two control boxes to a single remote for the synchronization of two bases. STEP 3.