2020 Ram 4500 Chassis Cab Trailer

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Page 290 of 516

Ram 4500 Chassis Cab 2020  Owners Manual 
288STARTING AND OPERATING  
RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.) 
Towing This Vehicle Behind Another Vehicle
NOTE:
When towing your vehicle, always follow applicable state and provincial l

Page 291 of 516

Ram 4500 Chassis Cab 2020  Owners Manual 
STARTING AND OPERATING289
(Continued)
Recreational Towing — Two-Wheel Drive 
Models
DO NOT flat tow this vehicle. Damage to the 
drivetrain will result.
Recreational towing (for two-wheel drive 
mo

Page 309 of 516

Ram 4500 Chassis Cab 2020  Owners Manual 
IN CASE OF EMERGENCY307
F0940 Amp Green (SSV & 
Cummins Diesel) –
Aux Relay Output / Diesel Fuel Heater – If Equipped
F09 30 Amp Pink –Brake Vacuum Pump – If Equipped (HD Only)
F10 40 Amp Gre

Page 310 of 516

Ram 4500 Chassis Cab 2020  Owners Manual 
308IN CASE OF EMERGENCY  
F2220 Amp Blue –Engine Control Module GPEC / Heavy Duty / Other – If 
Equipped
F22 25 Amp White (Cummins 
Diesel) –
PCM – If Equipped
F23 30 Amp Pink –CBC Feed # 1

Page 311 of 516

Ram 4500 Chassis Cab 2020  Owners Manual 
IN CASE OF EMERGENCY309
F3630 Amp Pink –Electric Back Light – If Equipped
F37 30 Amp Pink –Fuel Heater #2, Aux Relay 2 – If Equipped (HD Only)
SSV (DS 1500 Only)
F38 30 Amp Pink –Integrated

Page 314 of 516

Ram 4500 Chassis Cab 2020  Owners Manual 
312IN CASE OF EMERGENCY  
F78 –10 Amp RedEngine Control Module / Powertrain Control Module / 
Electric Power Steering (DS 1500 Only)
F78 –15 Amp BlueEngine Control Module / Powertrain Control Mod

Page 315 of 516

Ram 4500 Chassis Cab 2020  Owners Manual 
IN CASE OF EMERGENCY313
F90/F91 –20 Amp Yellow IGN or BATT Customer Selectable – If Equipped (HD Only)
Power Outlet (Rear Seats) Customer Selectable (DS 1500 
Only)
F93 –20 Amp Yellow Cigar Lig

Page 331 of 516

Ram 4500 Chassis Cab 2020  Owners Manual 
329
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GAS ENGINE  
Your vehicle is equipped with an automatic oil 
change indicator system. The oil change indi-
cator system will remind you that it i