68RFE Internal Wiring Harness 2010, used and ready to install. Fits the 68RFE. Ships fast from the USA.
A 2010 Ram 2500 or 3500 with the 6.7L Cummins that keeps dropping into limp mode, throws speed sensor or solenoid codes that vanish after a restart, or acts up only on rough roads or in wet weather is a good candidate for a wiring fault rather than a failed part inside the transmission. This listing is a used, factory OEM 68RFE transmission wiring harness sold for the 2010 model year. It is the harness that runs along the outside of the case to the solenoid pack connector and the sensors; the 68RFE has no separate wiring loom inside the pan. Check the photos closely, because it is a used part sold as removed.
The 68RFE has no hydraulic shift logic to fall back on. The transmission controller picks every shift and every lockup event, sends the command to the solenoid pack, and then checks the result using input speed, output speed and pressure switch signals that come back through this same harness. A single corroded pin or a wire with a broken strand inside intact insulation can make the controller think a clutch is slipping, and its answer is to lock the truck in a limp gear to protect the unit. On a heavy truck that tows, the harness also lives next to a hot transmission and a crossmember, and that is where clips break and the loom rubs through.
2010 is the year to pay the most attention to. Transmission Digest documents that the 68RFE changed from the early white connector solenoid pack to the gray connector pack around 2010, and that the overdrive solenoid was eliminated at the same time. A 2010 truck can therefore have either design depending on build date, and the harness must match the pack your transmission actually has.
Make the harness prove itself guilty first. With live data on the scan tool, wiggle the harness along its whole run and at each connector while watching the speed and pressure switch values; a dropout on movement is your answer. Then load test the power and ground feeds instead of only checking voltage with nothing connected, and check each sensor circuit for continuity back to the controller and for a short to ground. Our 68RFE speed sensor guide covers the sensor tests and the P0716 trap, and the 68RFE Ram 2500 common problems guide separates wiring faults from the clutch and valve body failures this transmission is known for.
This harness is listed for the 2010 68RFE, which means Ram 2500 and 3500 pickups and 4500/5500 chassis cabs with the 6.7L Cummins. Because 2010 straddles the white to gray solenoid pack change, look at the connector color on your pack and compare the part number label, connector count and routing on your old harness with the photos. If anything is unclear, send us your year and VIN and we will check it before shipping. It does not fit 5.9L trucks with the 48RE or gas-engine Rams. Everything else for this unit is on our 68RFE parts collection.
If testing clears the wiring and a clutch pack is slipping, the TransGo 7-ball RFE shift kit is worth adding during the overhaul on these earlier valve bodies.
| Fits | 68RFE 2010 |
| Part type | Internal Wiring Harness |
| Condition | Used |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. Despite the listing name, this is the transmission harness that runs along the outside of the 68RFE. The solenoid pack connector passes through the case, so the harness work is done from outside the transmission.
It is listed for the 2010 68RFE behind the 6.7L Cummins. Because 2010 is the year the solenoid pack changed from a white to a gray connector, check your pack's connector color and compare your old harness with the photos, or send us your year and VIN to confirm.
It is a used OEM part sold as removed from a vehicle. Inspect the listing photos for connectors, loom and clips before you order, and it is covered by a 1-year warranty.
Yes, that is one of the most common reasons. Wiggle test the harness with live data, check for fluid in the case connector, and load test the power and ground circuits. A repeat failure after a new pack very often comes down to wiring or connectors.
Not because of the harness itself, but check the level and condition. Use ATF+4 only and set the level hot. If the truck ran in limp mode for a long time, look for burnt fluid that points to clutch damage.
