TRUCK SERVICE MANUAL TM 5-4210-230-14&P-1 ELECTRICAL 8. If  necessary,  position  sealed  beam  unit  in  headlight mounting   ring   and   secure   with   retaining   ring   and screws. 9. Connect three-way wiring connector to rear of sealed beam unit. 10. Engage   mounting   slots   in   headlight   mounting   ring into  collar  grooves  of  adjustment  screws.    Connect headlight retaining spring to headlight mounting ring. 11. Install headlight bezel and secure with screws. CAUTION DO NOT overtighten bezel retaining screws.  Overtightening could cause damage (stripping) of threads in hood (fender). 12. Check light operation. 13. Check headlight aim.  (See HEADLIGHT AIMING). FRONT TURN SIGNAL/MARKER LIGHTS BULB REPLACEMENT Procedure  applies  to  either  turn  signal  or  side  marker  bulbs. Refer to Figure 9. 1.  Remove lens mounting screws and remove lens. 2.    Press  bulb  inward  and  turn  counterclockwise  to  remove bulb from socket. 3.    Inspect  bulb  socket.    If  rusty  or  corroded,  replace  place light assembly.  Inspect lens gasket and replace if damaged. 4.  Insert new bulb in socket, press inward and turn clockwise to lock in place. 5.    Position  lens  and  gasket  on  light  body  and  install  lens mounting screws. 6.  Check light operation. Fig.  9  Front Turn Signal/Marker Light LIGHT ASSEMBLY REPLACEMENT 1. Disconnect wiring cable from base of light assembly. 2. Remove  nuts,  washers  and  wiring  cable  clip  (where used)  from  light  mounting  studs.    Remove  nuts  and washers from light guard mounting bolts (if equipped). 3. Remove    light    assembly    (and    light    guard)    from fender. 4. Inspect light mounting pad and replace if damaged or deteriorated. 5. Position   mounting   pad,   light   assembly   (and   light guard) on fender. 6. Install washers and nuts (and cable clip, where used) on light mounting studs.  Install light guard mounting bolts, washers and nuts (if equipped). 7. Plug wiring cable connector into light assembly. 8. Tighten light (and light guard) mounting nuts. 9. Check light operation. CLEARANCE AND IDENTIFICATION LIGHTS (CAB) BULB OR LIGHT ASSEMBLY REPLACEMENT (Refer to Figure 10). 1. Remove  light  mounting  screws.    Remove  trim  bezel and seal (where used). 2. Pry light assembly from mounting recess in cab. 3. Turn bulb socket about one-eighth turn counterclockwise and remove socket (with bulb) from light assembly. Fig.  10  Clearance Light CTS-2781S  Page 6 PRINTED IN UNITED STATES OF AMERICA