Cargo van, window van, cutaway and chassis cab. Key start.
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Which wires give constant, ignition and ground on a 2016 Ram ProMaster?
On a 2016 Ram ProMaster, take constant power from the Red/Black wire at the ignition switch, white 3-pin plug, pin 2, ignition from the Blue/Red wire at the ignition switch, white 4-pin plug, pin 2, and ground to clean, bare body metal. Meter every wire first.
Written by API Signal, fleet GPS and camera installers for 35+ years across Georgia, South Carolina and North Carolina, installing every major telematics and camera brand. Every wire on this page lists its source.
Test every wire with a meter before you tap it
No wiring information is ever guaranteed. Colors and locations change with trim, options and build date, and the manufacturer can change them in the middle of a model year. We share this as a starting point for installers, and you are responsible for confirming every connection on the truck in front of you.
This page covers the 2016 Ram ProMaster: cargo van, window van, cutaway and chassis cab. The ignition switch plugs on the steering column have constant, ignition and accessory.
Power, park, lock and CAN wires come from the Directed guide for 2014 to 2016 vans, and the upfitter colors from Ram's 2016 upfitter sheet. The other body wires come from the 2017 list. Our own team has not yet metered these on a 2016 van, and each row says so.
OBD-II portUnder the driver dash
Best power spotIgnition switch plugs
System voltage12V
Ignition typeKey
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Where do I get constant, ignition and ground on a 2016 Ram ProMaster?
Take constant, ignition and ground from the same area. On this van the ignition switch plugs on the steering column have constant, ignition and accessory, and vans built with Ram's upfitter package (option BC3) also have power and signal plugs at the passenger side B-pillar.
Option 1 Easiest
Ignition switch plugs
Steering column, white 3-pin and white 4-pin plugs. Key start.
Constant
Red/Black
Ignition switch, white 3-pin plug, pin 2Always hot, 20A. The Directed 2014 to 2016 guide and the 2017 list agree.
Ignition
Blue/Red
Ignition switch, white 4-pin plug, pin 2Hot in run and start (ignition 1). A second ignition is White/Black on the 3-pin plug, pin 1.
Ground
Body ground
Body metal under the dashClean, bare metal only. Never the battery negative post.
Accessory
Blue
Ignition switch, white 4-pin plug, pin 1Hot in accessory and run.
The starter is Brown/White or Brown/Gray on the 3-pin plug. Directed and the 2017 list put it on pin 3 and the second ignition on pin 1; iDatalink swaps those two pins, so meter before you tap. Never tap the starter. A second constant, Red 70A, is on the BCM gray 2-pin plug, pin A.
Option 2 Upfitter package
Upfitter connectors
Behind a panel at the base of the passenger side B-pillar. Only on vans ordered with option BC3; it cannot be added later.
Constant
Red
Upfitter power connector, pin 112V constant, fused 50A on 2014 and 2015 vans, 70A from 2016. Ram's ProMaster upfitter sheets.
Ignition
Blue/Yellow
Upfitter 15-way accessory connector, pin 13Ignition feed, 600mA max on a 5A fuse. Enough for a GPS or camera.
Ground
Black
Upfitter power connector, pin 2Ram's ground pin on the upfitter power connector.
Pin 3 of the 15-way accessory connector is vehicle speed (Brown/Light Green). Check the van has the BC3 plugs before planning on them.
Ignition switch colors from the Directed install guide for 2014 to 2016 ProMasters (fetched twice) and a 2017 ProMaster wire list on the12volt, which agree. Upfitter colors from Ram's ProMaster upfitter sheets (OEM).
What are the turn signal, reverse and light wires on a 2016 Ram ProMaster?
Circuit
Wire color
Location and what it does
Left turnPositive +Not yet checked
Blue/White
BCM black 60-pin plug (C4), pin 31 front; green 60-pin plug (C6), pin 19 rearFlashes with the left signal. From a 2017 ProMaster wire list on the12volt.
Right turnPositive +Not yet checked
Blue/Black
BCM plug C4, pin 46 front; plug C6, pin 18 rearFlashes with the right signal.
Park lightPositive +Not yet checked
Yellow/Green (left)
Yellow/Gray (right front)
Yellow/Black (switch, negative)
BCM plug C4, pins 55 and 54 (front); switch input at the headlight switch black 12-pin, pin 7The Yellow/Black switch input is negative; Directed lists the same wire for 2014 to 2016. The right rear is Yellow/Blue on C6, pin 17.
HeadlightNegative -Not yet checked
White/Light Green (high beam)
Headlight switch black 12-pin, pin 6High beam input. The low beam wire was not found.
ReversePositive +Not yet checked
White/Light Green
BCM green 60-pin plug (C6), pin 31Hot in reverse. The same color is the high beam input at the switch, so go by plug and pin.
Dome lightPolarity: meter itNot yet checked
White/Yellow
BCM plug C6, pin 8Dome output. Only one read of the 2017 list returned this row, so meter it.
Each chip shows the main insulation color with its stripe. Source: 2017 ProMaster wire list, carried to 2016; the park light switch wire is confirmed by the Directed guide.
Where are the brake, door, speed and CAN wires on a 2016 Ram ProMaster?
Circuit
Wire color
Location and what it does
BrakePositive +Not yet checked
Light Green/White
Brake switch, white 4-pin plug, pin 4Hot with the pedal pressed. Directed calls it Green/White; the 2017 list calls it Light Green/White.
DoorsNegative -Not yet checked
White/Purple (driver)
White/Black (passenger)
Black/Purple (right rear)
White/Blue (rear cargo)
BCM plug C6: pin 50 driver, pin 51 passenger, pin 33 right rear, pin 35 rear cargo doorsDoor triggers. The right rear may be the sliding door; meter it.
Lock / unlockNegative -Not yet checked
Blue/Yellow (lock)
Gray/White (rear unlock)
BCM green 60-pin plug (C6), pin 53 (lock); pin 27 (rear door unlock)Directed and the 2017 list agree on the lock wire. A second lock wire is Gray/Brown on the BCM brown plug (C8), pin 1.
Parking brakeNegative -Not yet checked
Orange/White
BCM plug C6, pin 44Grounds with the parking brake set.
HazardNegative -Not yet checked
Purple/Orange
BCM brown 60-pin plug (C8), pin 55Hazard switch input.
Vehicle speedAC signalNot yet checked
Brown/Light Green (upfitter)
Gray/White (PCM, gas)
Upfitter 15-way connector, pin 3; or PCM 96-pin plug, pin 34 (3.6L gas)The upfitter pin is a 0 to 5V square wave from Ram's upfitter sheet, on vans with option BC3.
TachAC signalNot yet checked
Blue/Black (gas)
White/Yellow (diesel)
Camshaft position sensorEngine speed signal.
CAN busDataNot yet checked
Light Green (high)
Brown (low)
OBD port under the driver dash, pin 6 and pin 14Directed and the 2017 list agree. A second, slower bus is on pins 1 and 9. Never cut or splice them.
Sources: the Directed install guide for 2014 to 2016 ProMasters (aftermarket), a 2017 ProMaster wire list on the12volt (installer-reported), and Ram's ProMaster upfitter connector sheets (OEM). The low beam wire was not found.
Which years share wiring with the 2016 Ram ProMaster?
This page2016Directed guide, Ram 2016 upfitter sheet and the 2017 list.
Same wiring2014, 2015, 2017, 2018 and 2019The Directed 2014 to 2016 guide and the 2017 list agree on the ignition switch, park light, lock and CAN wires, and the iDatalink guide covers 2014 to 2019 as one install. Ram's upfitter sheet covers 2015 and newer.
Not this page2020 and newerWe have not published 2020 and newer because we found no ignition or body wire colors for them yet. 2022 moved to push-button start.
Where are the fuse boxes and ground points on a 2016 Ram ProMaster?
Upfitter power70A feedThe upfitter power connector's Red constant is fused at 70A, with a Black ground beside it.
Upfitter switchesFuses F86 and F87On 2016 and newer vans with the upfitter package, aux switch outputs 1 and 2 run on 20A fuses F86 and F87.
Ground pointsUpfitter ground or body metalUse the Black upfitter ground or clean, bare body metal, never the battery negative post.
Upfitter fuses from Ram's upfitter sheets. Our team has not yet checked them on a van.
Where is the OBD-II port on a 2016 Ram ProMaster?
OBD II
Diagnostic portOBD-II port: under the driver dashPlug-in GPS trackers and OBD harnesses connect here. Check the port before you plan the install.
Common questions about 2016 Ram ProMaster wiring
What wire is constant power on a 2016 Ram ProMaster?
Red/Black at the ignition switch, white 3-pin plug, pin 2. Always hot, 20A. Meter it before you tap it.
What wire is ignition on a 2016 Ram ProMaster?
Blue/Red at the ignition switch, white 4-pin plug, pin 2. Hot in run and start (ignition 1). Meter it before you tap it.
Where is the reverse wire on a 2016 Ram ProMaster?
White/Light Green (positive +) at the BCM green 60-pin plug (C6), pin 31. Hot in reverse. Meter it before you tap it.
Where is the brake wire on a 2016 Ram ProMaster?
Light Green/White (positive +) at the brake switch, white 4-pin plug, pin 4. Hot with the pedal pressed. Meter it before you tap it.
Where is the parking brake wire on a 2016 Ram ProMaster?
Orange/White (negative -) at the BCM plug C6, pin 44. Grounds with the parking brake set. Meter it before you tap it.
Where is the vehicle speed signal on a 2016 Ram ProMaster?
Brown/Light Green (upfitter) and Gray/White (PCM, gas) at the upfitter 15-way connector, pin 3; or PCM 96-pin plug, pin 34 (3.6L gas). The upfitter pin is a 0 to 5V square wave from Ram's upfitter sheet, on vans with option BC3. Meter it before you tap it.
Which years share wiring with the 2016 Ram ProMaster?
2014, 2015, 2017, 2018 and 2019. The Directed 2014 to 2016 guide and the 2017 list agree on the ignition switch, park light, lock and CAN wires, and the iDatalink guide covers 2014 to 2019 as one install.
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