In this writeup we will go over the installation process of our very popular 2005-2009 Mustang Plug in Sequntial kit. Installation is very simple and requires only a couple of basic tools.
- 7/16″ Deep Socket
- Flat head screw driver
First you’ll want to remove the black trim panel from inside the trunk area. Start by removing the twist off screw and push pin as circled below. Use the flat head screw driver to gently pry out the push pin. Repeat on the other side of the vehicle.
Next use your flat head screw driver and remove the two push pins as shown below. Again, gently pry out the pins to avoid any damage.
Take your 7/16 deep socket and remove the three nuts located on the inside of the trunk as shown below. These nuts hold the tail lamp onto the vehicle.
Once you’ve removed all three nuts, you are ready to remove the tail lamp and harness from the vehicle. Depress the tab on the grey harness plug and separate the connectors.
Now, gently pull the tail lamp away from the body of the vehicle and work the harness grommet out of its location using the flat head screwdriver as shown below. Once its free, pull the entire tail lamp and harness completely out.
With the tail lamp out from the vehicle, place it on a flat work bench and begin removing the light sockets by turning them counter-clockwise. You must also remove the socket for the reverse lamp. Finally, the harness is attached to the tail lamp with a white push pin. Remove it gently and free the harness from the tail light.
At this point we are almost done with the first side. Pull the bulbs out of the OEM harness and plug them back into the sequential harness. Before you re-install the new sequential harness, it is important to note the correct position. Each socket is pre-labeled with the numbers 1,2,3. Socket 1 should be installed in the inner most lens, socket 2 in the middle lens, and socket 3 on the outermost lens.
The orientation for the driver’s side tail lamp is shown below:
The orientation for the passenger side tail lamp is shown below:
The new sequential harness contains the white push pin. Remember to place it back in to secure the harness to the tail lamp.
To finish up the installation, re-route the harness with the grey connector through the body of the vehicle and plug it back in. Then, secure the black grommet and re-install the tail lamp. Re-attach the (3) bolts holding the tail lamp to the vehicle. Once you have completed the installation on the opposite side, place the black trim piece in place and re-attach the plastic push pins to complete your installation.
Now you can dazzle everyone when you flick your signals on with this unique product from StangMods.com