electrical

Battery Cable - Positive

for 2007 Ram 3500 5.9L I6 Cummins · 4WD

Difficulty

Easy

Time

54 min

Tools

Steps

✓Fact-checked. Built from OLP's spec database, then independently fact-checked line by line with every correction applied. Master-tech sign-off by Chris Hackleman is queued. Cross-check torque values against the factory manual, and stop if anything looks unsafe. How our data is made.

This procedure covers the removal and replacement of the positive battery cable on a 2007 Ram 3500 with the 5.9L Cummins diesel engine and 4WD.

Warnings

⚠️Always disconnect the negative battery cable first and reconnect it last to prevent short circuits

⚠Never allow the positive cable to contact any grounded metal surface while the negative cable is connected

ℹ️Radio presets and clock settings may be lost when disconnecting the battery

Tools required

10mm socket and ratchetEssential

13mm socket and ratchetEssential

Battery terminal puller

Wire brush

Dielectric grease

Corrosion inhibitor spray

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Parts

Positive battery cable assembly × 1 — Use OEM specification

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Preparation

Park vehicle on level surface and engage parking brake
Turn off all electrical accessories and remove key from ignition
Allow engine to cool completely if recently operated
Open hood and secure with prop rod

Procedure

1
Disconnect negative battery cable
Using a 10mm socket, loosen the negative battery terminal clamp bolt on the driver's side battery. Remove the negative cable from the battery post and tuck it away from the battery to prevent accidental contact.
2
Disconnect positive battery cable from driver's side battery
Using a 10mm socket, loosen the positive terminal clamp bolt on the driver's side battery. Remove the positive cable from the battery post. If the terminal is corroded and difficult to remove, use a battery terminal puller to avoid damaging the battery post.
3
Disconnect positive cable from passenger side battery
Locate the positive cable connection on the passenger side battery. Using a 10mm socket, loosen the positive terminal clamp bolt and remove the cable from the battery post.
4
Remove cable from starter motor
Locate the positive cable attachment point on the starter motor solenoid on the passenger's side of the engine. Using a 13mm socket, remove the retaining nut and carefully pull the cable terminal off the stud. Note the position and orientation for reinstallation.
5
Remove cable from power distribution center
Trace the positive cable to the power distribution center (fuse box) near the driver's side battery. Remove the protective cover if present. Using a 10mm socket, remove the retaining nut securing the cable to the distribution stud and disconnect the cable.
6
Release cable from retaining clips
Follow the entire cable route and release it from all retaining clips and cable ties along the frame rail and engine compartment. Take note of the routing path for proper reinstallation of the new cable.
7
Remove old cable assembly
Once all connection points and retaining clips are released, carefully remove the entire positive cable assembly from the vehicle. Inspect the new cable to verify it matches the old cable configuration and length.
8
Install new cable assembly
Route the new positive cable through the same path as the old cable, ensuring it does not contact sharp edges, hot engine components, or moving parts. Secure the cable with the original retaining clips along its entire length.
9
Connect cable to power distribution center
Attach the positive cable terminal to the power distribution center stud. Install the retaining nut and tighten securely with a 10mm socket. Reinstall the protective cover if equipped.
10
Connect cable to starter motor
Attach the positive cable terminal to the starter solenoid stud in the same orientation as removed. Install the retaining nut and tighten securely with a 13mm socket.
11
Connect cable to passenger side battery
Clean the positive battery post on the passenger side battery with a wire brush if needed. Attach the positive cable terminal to the battery post and tighten the clamp bolt securely with a 10mm socket. Apply dielectric grease or corrosion inhibitor if desired.
12
Connect cable to driver's side battery
Clean the positive battery post on the driver's side battery with a wire brush if needed. Attach the positive cable terminal to the battery post and tighten the clamp bolt securely with a 10mm socket. Apply dielectric grease or corrosion inhibitor if desired.
13
Reconnect negative battery cable
Clean the negative battery post with a wire brush if needed. Reconnect the negative cable to the driver's side battery post and tighten the clamp bolt securely with a 10mm socket. Apply dielectric grease or corrosion inhibitor if desired.

Reassembly

Verify all cable connections are tight and secure
Ensure the cable is properly routed and secured in all retaining clips
Verify the cable has adequate clearance from moving and hot components

Verification

Turn the ignition key to the ON position and verify all dash lights illuminate properly
Start the engine to confirm proper electrical system operation
Test all major electrical systems including headlights, HVAC blower, and power windows
Verify no warning lights remain illuminated after startup
Reset clock and radio presets as needed