VELOSSA TECH 2015-2021 Subaru WRX STI Big Mouth Lit Kit Ram Air Installation Guide
- June 4, 2024
- VELOSSA TECH
Table of Contents
- VELOSSA TECH 2015-2021 Subaru WRX STI Big Mouth Lit Kit Ram Air
- Kit Contents (Full Kit)
- Kit Contents (LIT Flare Only)
- Stock Components Removal
- Stock Components Removal
- Big Mouth Installation
- Big Mouth Installation
- Big Mouth Installation
- Wiring Harness
- Wiring Harness Schematic
- Wire Support
- Wire Routing
- Controller Placement
- Power Plug
- Power Bundles
- Main Switch and Ground
- Main Power
- Phone App
- Finalize
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
VELOSSA TECH 2015-2021 Subaru WRX STI Big Mouth Lit Kit Ram Air
Kit Contents (Full Kit)
Please review this document before attempting installation.
You will need basic hand tools and 2 hours of installation time.
| Kit Contents | Qty |
|---|---|
| M6 x 12mm Cap Screw | 1 |
| M6 Washer | 3 |
| M6 x 20mm Cap Screw | 1 |
| M6 x 3mm Spacer | 1 |
| M6 Lock Nut | 3 |
| Cable clip | 1 |
| Diode Dynamics RGBW Controller | 1 |
| Positive Cable w/ In-Line Fuse | 1 |
| Power Cable w/ Pigtail Connector | 1 |
| Switch | 1 |
| Switch Ground Cable w/ Crimped Connector | 1 |
| 8″ Zip Ties | 8 |
| Assembled LIT KIT BIG MOUTH | 1 |
Kit Contents (LIT Flare Only)
Please review the table below and make sure you have received the kit contents.
| Kit Contents | Qty |
|---|---|
| Diode Dynamics RGBW Controller | 1 |
| Positive Cable w/ In-Line Fuse | 1 |
| Power Cable w/ Pigtail Connector | 1 |
| Switch | 1 |
| Switch Ground Cable w/Crimped Connector | 1 |
| 8″ Zip Ties | 8 |
| Cable Clips | 2 |
| M6 Lock Nut | 2 |
| Assembled LIT Flare | 1 |
If you already own the Velossa Tech GEN 4 Subaru WRX BIG MOUTH, skip to slide 9 to see install and wiring instructions.
Stock Components Removal
It is best to Google “How to remove bumper” for your particular trim. After the bumper is removed, you will see the following.
Stock Components Removal
Remove front cross member.
Big Mouth Installation
The BIG MOUTH slides into position as shown, make sure that it is seated
properly over the OEM tab with one hole that is present underneath.
Big Mouth Installation
Be patient with this next step. Ensure the bolt, OEM hole and BIG MOUTH fastening point are all lined up, feel for thread engagement and slowly begin to thread the bolt into the BIG MOUTH.
Big Mouth Installation
Once the BIG MOUTH is seated properly and screwed down, you may re-install the
OEM cross member, ensure that the sides of the cross-member tuck behind the
flaps behind the headlights before screwing together.
Wiring Harness
Wiring Harness Schematic
Wire Support
Clean this surface and place the cable clip as shown. 
Wire Routing
Route the LED power wire underneath the metal brackets as shown.
Plug the LED into the controller, ensure that the wire is not being stressed
!!!!
Controller Placement
Use a zip tie here, note the location of the tucked controller.
Power Plug
Zip tie the plug underneath this frame rail.
Power Bundles
Main Switch and Ground
Note: the switch IS NOT USED to control the LED’s, it is just used to cut
power if needed.
Main Power
Route the power wire around the battery and fasten to battery terminal using 6mm nut.
Phone App
Download the Diode Dynamics app and connect via Bluetooth.
How to connect to the app:
- After installing the app from the app store, open the app on your device.
- Cycle the power to the Bluetooth controller by unplugging it and plugging it back in or flick the power switch and wait a few seconds, then turn it back on.
- Wait for the app to detect the controller, it will pop up on the app screen as a Bluetooth controller. If necessary, cycle the power once more to refresh the controller.
- Once the controller shows up on the app, click it and connect. You have 30 seconds to select the controller once it shows up on the app. After 30 second you will need to refresh again to detect the controller again.
- Note that if you mounted your controller behind a lot of metal components, this may degrade the signal and range.
Finalize
Re-install the bumper the same way it was removed and ENJOY!