TRUCK SERVICE MANUAL TM 5-4210-230-14&P-1 ELECTRICAL LIGHT ASSEMBLY REPLACEMENT 1. If     necessary,     clean     dirt     from     threads     of     light assembly mounting studs. 2. Remove  nuts  and  washers  (3  each)  securing  light assembly to mounting bracket. 3. Remove mounting screws (4) securing terminal cover to light assembly. 4. Disconnect    wiring    harness    connector    from    light assembly. 5. Inspect and clean wiring harness connector terminals.        If    terminals    are    badly    corroded    or damaged, replace connector. 6. To   retard   corrosion,   coat   terminals   of   new   lamp assembly and wiring harness with grease. 7. Connect  wiring  harness  terminal  connector  to  light assembly. 8. Install  terminal  cover  on  light  assembly  and  secure with mounting screws. 9. Position   light   assembly   on   mounting   bracket   and secure with lock washers and nuts. 10. Check light operation. INSTRUMENT PANEL CONTROL LIGHT (Located above headlight switch) If bulb fails, it will be necessary to replace the light assembly as follows: 1. Remove   nine   (9)   screws   and   remove   instrument panel top cover. 2. If necessary pull light wiring up through hole in top of instrument panel to expose wiring connector. 3. Disconnect   light   assembly   wiring   connector   from wiring harness connector (Figure 17). 4. Disengage slot of light assembly from lens to remove light assembly (Figure 17). Do  not  lose  lens  which  can  fall  out  of  instrument panel when light is removed. 5. Discard old light assembly. 6. Hold lens into hole in instrument panel and snap new light   assembly   over   lens   to   retain   lens   and   light assembly. Fig.  17  Instrument Panel Control Light 7. Connect   light   assembly   wiring   connector   to   wiring harness connector. 8. Check light operation. 9. Install    instrument    panel    top    cover    and    retaining screws. ASHTRAY LIGHT If bulb fails, it will be necessary to replace the light assembly as follows: 1. Remove ashtray from ashtray housing. 2. Remove     mounting     screws*     from     cluster     panel holding   ashtray   (plus   radio   and   auxiliary   gauges, where equipped). *  without radio; 8 with radio.  On 2200 series vehicles, 8 without radio, 10 with radio. 3. Turn  panel  outward  to  gain  access  to  ashtray  light (Figure 18). 4. Disconnect   light   assembly   wiring   connector   from wiring harness connector. 5. Disengage slot of light assembly from lens to remove light assembly. Do not lose lens which can fall out of ashtray housing when light is removed. For  light  assembly  and  lens  relationship,  see  Figure 17. CTS-2781S  Page 10 PRINTED IN UNITED STATES OF AMERICA