TM  10-3930-638-24&P 2-28. INSTRUMENT PANEL MAINTENANCE (cont) b. START Switch and VEHICLE LIGHTS Switch (cont). STEP LOCATION ITEM ACTION REMARKS CLEANING  (cont) 4 All  hardware INSPECTION 5 Rubber  boot  (2) 6 Harness and START SWITCH  wires 7 Switches (3 and 14) 8 Terminal  blades  (7) 9 All hard ware INSTALLATION 10 Instrument  panel,  a. left of steering column b. c. d. e. f. g. h. i. j . k. VEHICLE   LIGHTS switch (14) Four screws (12) and lock  washers  (13) Three levers (11) Three screws (9) and and lock washers (10) Harness  connector  (8) Hex nut (4) Two screws (5), washers (6) and terminals (7) START  switch  (3) Rubber  boot  (2) Wire  leads  (1) Wire leads (1), terminals (7) and harness  connector  (8) Clean Inspect Inspect Inspect Inspect Inspect Position Install  and tighten Position Install  and tighten Install  and tighten Install and position Install and tighten Position Install and tighten Push on Seal Use  cleaning  solvent  P-D-680. Dry thoroughly with compressed air Replace if threads damaged, or if boot cracked  or  deteriorated Replace if insulation frayed, or if conductors  broken Replace  if  threads  or  terminals  damaged Replace if broken or corroded Replace if worn, or if threads damaged In instrument panel Until VEHICLE LIGHTS switch (14) is securely  mounted On  shafts  of  VEHICLE  LIGHTS switch (14) Until levers (11) are securely mounted On  VEHICLE  LIGHTS  switch  (14) For l/8 inch of START switch threads above  instrument  panel On  START  switch  (3) In instrument panel Until START switch (3) is securely mounted To  terminals  (7) Use silicone rubber sealer 2-132