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700R4 Lockup Wiring Diagram

700R4 External Lockup Kit

700R4 External Lockup Kit

Installation Instructions

Figure 1: Kit contents

Typical kit contents showing components. Your kit contents could vary.

Oil Pressure Switch Installation

  1. Remove the 4th gear pressure port plug with a 9/16" wrench.
  2. Apply Teflon pipe tape to the threads of the brass fittings in a clockwise direction.
  3. Tighten the 90° Elbow into the 1/8" to 1/4" adapter.
  4. Then thread them both into the port. DO NOT OVERTIGHTEN!
Figure 2: Oil pressure switch in the 4th gear port

Real World Wiring Diagram

The fuse holders connect to the vehicle's fuse block. Follow these steps:

  1. Fuse holder connects to the lighted manual switch's bottom terminal providing the 12V+ power source.
  2. The center terminal of the switch is connected to the wire that leads down to the oil pressure switch on the trans case.
  3. The third connection switch is a ground (-) terminal that connects to the lead from the transmission connector plug.
  4. The ring terminals are both grounds.
Figure 3: Wiring diagram

Testing the Lockup Solenoid

  1. Connect the transmission connector plug to the transmission plug securely.
  2. Apply 12V+ voltage to the loose pigtail of the connector plug.
  3. Listen for a faint "click" inside the transmission, indicating a functioning solenoid.
  4. If no click is heard, ground the lead with the eyelet. If still no click, inspect and potentially replace the lockup solenoid.
Figure 4: Solenoid test

Troubleshooting

For further assistance, visit the video guide: YouTube.com/watch?v=lFiKswiTMJU

Technical Support: 1-800-708-0087