CAB GP 1573737 - Caterpillar

Lengthening Procedure
Turn the key switch to the OFF position. Turn the battery disconnect switch to the OFF (open) position.
Assemble new jumper with parts needed. Refer to the Table 1.
Illustration 1 g03083816
Schematic of Radio Ready Harness
Cut seven lengths of 18 gauge wire (any color) 250 mm (9.8 inch) in length. Refer to the Illustration 1.
Strip both ends of each wire and crimp the 9X-3402 Connector Socket to one end and 8T-8729 Connector Pin to opposite end.
Illustration 2 g03083817
(1) Position "4"
Insert all the seven 9X-3402 Connector Socket into 155-2264 Connector Plug As , and leave the position 4 (1) to be vacant. Refer to the Illustration 3.
Insert all the seven 8T-8729 Connector Pins into 3E-3388 Connector Receptacle As , and leave the position 4 (1) to be vacant. Refer to the Illustration 2.
Illustration 3 g03083818
(1) Position "4"
Insert 8T-8737 Seal Plug in the position 4 (1) of 3E-3388 Connector Receptacle As and 155-2264 Connector Plug As . Refer to the Illustrations 2 and 3.
Install 155-2259 Plug Lock Wedge into 155-2264 Connector Plug As .
Install 3E-3389 Receptacle Lock Wedge into 3E-3388 Connector Receptacle As .
Connect the new 3E-3388 Connector Receptacle As to 155-2264 Connector Plug As of the 328-3449 Main Cab Harness Connector (E-C11).
Connect the new 155-2264 Connector Plug As to the 3E-3388 Connector Receptacle As to 200-5728 Radio Harness As (Jumper) .
Install the entertainment radio.Refer to the Table 2 for more clarification on the terminal connection process.
Table 2
Pinout Table    
Position    Wire Number    Color    Terminal Name    
1     509     White     LH Speaker (-)    
2     508     Purple     LH Speaker (+)    
3     F511     White     Ground    
4     -     -     -    
5     A513     Red     +12v Memory Out    
6     592     Blue     +12v Switched Out    
7     512     Green     LH Speaker (-)    
8     511     Brown     RH Speaker (+)    A new harness will address this issue on production machines scheduled for third quarter of 2012. A Service magazine article will be published at that time.