46RE Internal Wiring Harness 2000

This is the internal wiring harness for a 2000-and-later 46RE or 47RE, the A518 and A618 in Dodge Ram, Dakota and Durango trucks. It is a used, genuine Chrysler harness with the round 8-pin case connector on one end and a 4-pin rectangular connector for the late-style governor pressure sensor on the other, referenced under interchange 22988C. If your truck has a melted case plug, a broken sensor connector, or wires that chafed through on the valve body, this replaces the wiring for a fraction of the cost of a complete solenoid assembly.

What the internal harness does in a 2000-up 46RE

Inside the pan the 46RE has only a handful of electrical parts: the overdrive solenoid that makes the 3-4 shift, the converter clutch solenoid, and the governor pressure solenoid and sensor that replace the old mechanical governor. All of them are wired back to one round plug that passes through the case and is held to the 3-4 accumulator housing with a shoulder bolt. For model year 2000, Chrysler changed the governor pressure sensor from a round metal transducer to a rectangular plastic sensor, and the harness changed with it. That is why a 2000-up harness has the rectangular 4-pin sensor plug you see in our photo, and why a 1996-1999 harness will not plug into a later sensor.

Symptoms of a damaged internal harness

• No fourth gear, or no converter lockup, with solenoids that test good on the bench
• P0748 governor pressure solenoid circuit, or P1763 (sensor volts high) and P1764 (sensor volts low), especially if they come and go
• P0743 or P0753 solenoid circuit codes that return right after clearing
• Starting in second or third and shifting late because the PCM has lost governor control
• Fluid in the outside connector, a cracked case plug, or a broken latch on the governor sensor connector

How to confirm before you buy

Do the cheap checks first. Transmission Digest notes the transmission relay is powered from an engine-running circuit, so measure with the engine running. A common cause of P1763 on gas-engine RE trucks is a shared ground with the heated oxygen sensors, which is outside the pan. If those check out, pull the pan, unplug the harness at the solenoids and the governor, and ohm each wire from the case plug while you wiggle it. Any open or high-resistance wire means the harness is bad. Our governor pressure solenoid and sensor guide explains the desired-versus-actual check, and the shift solenoid testing guide covers the 3-4 and lockup circuits.

Fitment

The listing covers A518 (46RE) and A618 (47RE) automatics from 2000 and later with the rectangular plastic governor pressure sensor. That includes 2000-up Ram 1500, 2500 and 3500, Dakota and Durango with these transmissions. It does not fit 1996-1999 units that use the round governor transducer. This is a used, harness-only part: no solenoids or sensors are included, so make sure your solenoids unplug from the harness before buying wiring alone. If yours are wired in, the complete solenoid assembly is the better buy; on a 1996-99 truck see the 1996-99 overdrive and lockup solenoid assembly instead. Match the connectors in our photo or send your year and VIN. More parts are on the 46RE parts page.

Install notes

• Remove the filter and unplug the governor sensor and solenoid, then remove the shoulder bolt from the case connector at the 3-4 accumulator housing.
• Unhook the harness from the accumulator cover plate and transfer your solenoids onto the replacement wiring. Route the new harness the same way so the pan rail cannot cut it.
• Use a new O-ring on the case plug; a dry O-ring is a common source of fluid wicking into the outside connector.
• Refill with ATF+4 and check the level hot in Neutral.
• If the transmission is apart, a 1999-up shift correction kit or a 1998-2002 banner rebuild kit goes in at the same time.

For wider troubleshooting, see 46RE common problems and fixes.

Is this new or used?

Used, genuine Chrysler. It is a pulled OEM harness in good condition, harness only, with no solenoids or sensors attached.

How do I know if I need the 2000-up harness?

Look at the governor pressure sensor on your valve body. A rectangular plastic sensor with a 4-pin plug means 2000-up and this harness fits. A round metal transducer means 1996-1999 and you need the earlier harness.

Does it fit a 48RE?

The listing covers A518/46RE and A618/47RE 2000-up. Do not assume 48RE fit; send your VIN and we will check before it ships.

What codes can a bad harness set?

P0743 and P0753 for the lockup and 3-4 solenoid circuits, P0748 for the governor pressure solenoid circuit, and P1763 or P1764 for governor pressure sensor voltage.

Do I need to reprogram anything after replacing it?

No relearn is required for a harness swap. Clear the codes and road test, watching that governor pressure tracks desired on a scan tool.

• 46RE Pressure Control (EPC) Solenoid Symptoms
• 46RE Shift Solenoid Symptoms, Testing and Replacement
• 46RE Common Problems and Fixes: A Rebuilder's Diagnostic Guide
• 46RE Speed Sensor Symptoms: Output Sensor, P0720 and P0500