TM  10-3930-638-24&P 2-28. INSTRUMENT PANEL MAINTENANCE (cont) e.  Warning  Lights  and  Diodes. This  task  covers:  a.  Removal d.   Testing b.  Cleaning e.    Installation c.   Inspection INITIAL  SETUP TOOLS None MATERIALS/PARTS Cleaning solvent P-D-680 Clean  cloths EQUIPMENT CONDITION Paragraph Condition Description Engine  off. IGNITION switch in OFF position and key  removed. 2-53h Noise baffle mat removed. STEP LOCATION ITEM ACTION REMARKS NOTE All five warning light assemblies are identical except for legend marked  on  lens  (3).  Isolation  diode  (6)  for  ALTERNATOR warning light is located in engine compartment (see para 2-26). Isolation diode (6) not used with OIL PRESSURE warning light. REMOVAL 1         Instrument panel, a. Wire leads (1) Grasp  and  pull From warning light terminals far right side b. Socket (2) Push Against instrument panel c. Lens (3) Rotate 1/4 turn Support socket (2) d. Socket (2) Lower  and From instrument panel remove e. Bulb (4) Remove f. Isolation diode (6) Grasp  and  pull From connector (5) 2-137