D Group 37 Wiring diagram FL Component wiring diagram index GD Reverse lights/brake lights .............................................................................................. page 44 GF Trailer connections .......................................................................................................... page 45 GF1 Diagnostics connections ................................................................................................. page 46 GH1 Interior lighting L1H1/L2H1 .............................................................................................
page 47 GH2 Interior lighting, back area cab L2H1 .............................................................................. page 48 GH3 Interior lighting L4H1C .................................................................................................... page 49 GM Windscreen wiper washer .............................................................................................. page 50 GQ LCM/Flasher unit ............................................................................................................ page 51 GQ1 Horn ................................................................................................................................
page 52 HJ Air heater, UADR ............................................................................................................ page 53 HJ1 Air heater, ADR ............................................................................................................... page 54 HY Climate unit ..................................................................................................................... page 55 IA Heated seat/buzzer belt/cigar lighter .............................................................................. page 56 IF1 Heated adjustable mirror LHD ........................................................................................
page 57 IF2 Heated adjustable mirror RHD ........................................................................................ page 58 IM Central locking, immobiliser ............................................................................................ page 59 IN Theft alarm ..................................................................................................................... page 60 IO BBM ................................................................................................................................ page 61 IQ Sun roof/window lift ........................................................................................................
page 62 IQ1 Rear window lift .............................................................................................................. page 63 IR 12V power supply ........................................................................................................... page 64 IR1 12V power supply (AUD-CDB/AUD-CDM) ...................................................................... page 65 IU Radio (before w837) ....................................................................................................... page 66 IU1 Radio (after w837) ..........................................................................................................
page 67 KA Brake body builder output/horameter ............................................................................. page 68 NA Body builder connector PB1 ........................................................................................... page 69 NB Body builder connector PB2 ........................................................................................... page 70 NC Body builder connector PB3 ........................................................................................... page 71 ND Body builder connector PB4 ...........................................................................................
page 72 NE Body builder connector PB5 ........................................................................................... page 73 XA Bus J1708/J1587 ............................................................................................................ page 74 XB Bus J1939–1 ................................................................................................................... page 75 XC Bus J1939–2 ................................................................................................................... page 76 XD Bus J1939–7 ................................................................................................................... page 77 7