APPENDIX B: MAC TM 9-2350-256-20 Batteries to master Inspect 0.5 relay, voltage Replace 1.0 regulator and slave Repair 1.0 receptacle wiring harness assembly engine disconnect (dual voltage regulator) Batteries to master Inspect 0.5 relay, voltage Replace 1.0 regulator and slave Repair 1.0 receptacle wiring harness assembly engine disconnect (single voltage regulator) Bulkhead to APU Inspect 0.5 master relay and Replace 1.0 rigger's lights wiring Repair 1.0 harness (dual voltage regulator) Bulkhead to APU, Inspect 0.5 master relay and Replace 1.0 rigger's lights wiring Repair 1.0 harness assembly (single voltage regulator) APU and engine Inspect 0.5 armature relays to Replace 1.0 voltage regulator Repair 1.0 harness (single voltage regulator) Gage panel to bulkhead Inspect 0.5 wiring harness Replace 1.0 assembly (dual Repair 1.0 voltage regulator) Gage panel to bulkhead Inspect 0.5 wiring harness Replace 1.0 assembly (single Repair 1.0 voltage regulator) Switch panel to head Inspect 0.5 lamps and bulkhead Replace 1.0 wiring harness Repair 1.0 assembly Switch panel to park Inspect 0.5 position switch to Replace 1.0 bulkhead wiring Repair 1.0 harness assembly B-12 (5) Tools and Equipment Ref Code (3) Maintenance Function (6) Remarks Code (2) Component /Assembly (1) Group Number     C O F H D (4) Maintenance Level