wiring diagram for Cummins ECM great for making bench harness and diagnostic  not all diagram are listing 
if you dont see a engine diagram  in this list, just  message can i will check listing for you

Comercial Marine
Marine_Aux_C_Command_Elite_Panel_4021623_Rev_0
Marine_Aux_C_Command_Elite_Plus_Panel_4021622_Rev_1
Marine_Aux_C_Command_Panel_4021593_Rev_1
Marine_Prop_C_Command_Elite_Panel_4021624_Rev_0
Marine_Prop_C_Command_Elite_Plus_Panel_4021621_Rev_0
Marine_Prop_C_Command_Panel_4021594_Rev_1
QSK19 CM2150 MCRS Marine Auxiliary with C Command 4022100
QSK19 CM2150 MCRS Marine Auxiliary with C Command Elite 4022101
QSK19 CM2150 MCRS Marine Propulsion with C Command 4022098
QSK19 CM2150 MCRS Marine Propulsion with C Command Elite 4022099
QSK19_CM850_Marine_Aux_C_Command_Elite_4021605_Rev_0
QSK19_CM850_Marine_Prop_C_Command_4021584_Rev_1QSK19_CM2150_Marine_Aux_C_Command_4022100_Rev_0
QSK19_CM850_Marine_Prop_C_Command_Elite_4021606_Rev_0
QSK19_CM2150_Marine_Aux_C_Command_4022100_Rev_0
QSK19_CM2150_Marine_Aux_C_Command_4022100_Rev_0
etc...

Cummins Mercruiser Diesel
Marine_Axius_4082052_Rev_0
Marine_SmartCraft_22_with_DTS_4082050_Rev_0
Marine_SmartCraft_22_without_DTS_4082051_Rev_0
Marine_SmartCraft_22_Zeus_4082045_Rev_2
QSB_QSC_QSL_CM850_Marine_SmartCraft_2_4021688_Rev_0
QSD2_QSD28_QSD42_Bosch_Marine_4082012_Rev_0
QSL9 QSC8.3 Marine CM850 SmartCraft 1.0 4081885_03_g
QSM11_CM570_Marine_3666468_Rev_0
SmartCraft 2.2 Digital Throttle and Shift DTS 4082050_01
SmartCraft 2.2 Zeus 4082045_03_g
SmartCraft 3.0 Zeus Triple Quad 4082081_p4_g
etc..

Heavy Duty
Celect_Plus_3666146_Rev_4
Celect_Plus_Industrial_3666348_Rev_0
Centry_3666078_Rev_04
ISM_CM570_Automotive_3666269_Rev_4
ISM_CM870_CM570_4021384_Rev_3
ISM_CM875_4021478_Rev_2
ISM_CM876_4021574_Rev_3
ISM_CM876_Without_Aftertreatment_4021644_Rev_0
ISX_CM871_4021575_Rev_2
ISX_CM871_Without_Aftertreatment_4021643_Rev_0
ISX11.9 CM2250 2883476_02
ISX15 CM2250 4022234_04
ISZ13 CM2150 4022174
QSX15_CM570_Power_Gen_4022029_Rev_1
QSX15_Dominion_G_Drive_3666349_Rev_2
etc....

Midrange
ISB CM2150 4021572-03
ISB CM2150 without Aftertreatment 4022080-01
ISB_CM55X_23_Pin_3666325_Rev_2
ISB_CM850_4021347_Rev_1
ISB_CM2150_4021572_Rev_2
ISB_CM2150_without_Aftertreatment_4022080_Rev_0
ISB5.9G CM2180 2883403_01
ISB6.7 CM2250 4022230-02
ISBe_CM800_3666483_Rev_4
ISBe_ISDe_CM2150_4021625_Rev_1
ISBe2_ISBe3_CM850_4021670_Rev_0
ISF2.8 CM2220 AN 4022139_01
etc....

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