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      05-30-2020, 11:45 PM   #1

Drives: 2013 BMW M5, Monte Carlo Blue
Join Date: Jan 2020
Location: NoVa

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DIY: Hardwire OBD Cable to Center Console

Disclaimer: Any modifications are done at your own risk.

These instructions are specific for the Bootmod3, but can be used for other platforms or tuning solutions as well.

Torx screw driver
Torx bits
Trim removal tools
Wire coat hanger
Electrical tape

OBD cable extender (right angle preferred) - https://www.amazon.com/gp/product/B0...s00?ie=UTF8&ps
OBD ENET cable - https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Bootmod3 Wifi Agent
USB phone cable (optional for wired connections)
2 x small zip ties (about 6 inches long)
1 x medium zip times (about 8-10 inches long)

Helpful Video:

I used this as a foundation, but it was a bit harder on the F10 M5 than the F30 due to the trim being more robust and tighter overall. Watch this video first to understand the overall concept.


1. Get a wire hanger and wrap both ends with electrical tape. This will help minimize the risk of poking a hole in your leather or scratching any part of the car. Move the seat back all the way to create some working room.

2. Open the center console and use a trim removal tool to remove the plastic tray.

3. Remove the carpeted driver's side center console trim. There is only one Torx screw securing the front corner of the trim. The rest is held by pop-in clips and sliding brackets.


4. Route one end of the wire coat hanger from the center console opening to the nearest sliding bracket hole. I tried to route it through to the bottom and elsewhere, but after experimenting, this looks to be the only viable option.

5. Once you get the hanger through the trim hole, using the electrical tape to secure the ENET end of the OBD cable to the wire hanger. Next, pull the wire hanger out of the armrest compartment, which will then snake the ENET cable through the bracket hole and into the armrest compartment itself. You may need to help push the ENET cable through the bracket hole at first to avoid damaging the plastic end. Once the ENET cable is through, undo the electrical tape then leave the hanger outside the car to prevent any accidental damage. The ENET cable should now go through the trim hole and out of the center console armrest compartment.

6. Push as much of the ENET cable into the upper plastic half of the center console trim. This will minimize the carpet trim from bulging or fitting incorrectly.

7. Reinstall the carpeted center console trim and the Torx screw. Ensure the ENET cable exits the trim toward the firewall. Note: The bracket where the ENET cable was routed through will not slide back into the hole due to the ENET cable being there. This may cause the carpeted trim to bulge slightly, but it is hardly noticeable and will not affect the operation of the chair.

8. Undo the 2 x Torx screws that secure the lower part of the dashboard. This is the plastic piece over the lower airbag. Use the trim tool to separate the dashboard without scratching any surface.

9. Route the ENET cable through the cutout in the dashboard trim closest to the brake pedal. Then, snake the cable toward the steering wheel from behind the dashboard panel.

10. Secure the OBD extender cable to the OBD port. Route the other end behind the dashboard panel and back toward the steering wheel. Connect the extender to the ENET cable's OBD port.

11. Adjust the length of the ENET cable in the center console armrest to the desired length. Next, use the large zip-tie to secure any excess wiring to where the OBD extender connects to the ENET cable. Cut the excess from the zip-tie.

12. Once the cables are neat and orderly, route the OBD/ENET joint and the excess wires near the back of the airbag panel. Push as much of the wire upward toward the steering wheel to keep it away from the airbag's operation. Firmly push the lower dashboard trim into place and reinstall the two Torx nuts.

13. Use a small zip-tie to the secure the exposed ENET cable to the brake pedal arm. Zip-tie as high as possible along the brake pedal arm. Be sure the cable does not affect the operation of the brake. If the cable has no slack, it will either affect brake operation or cause pulling against the trim-work.

14. Use the second small zip-tie to secure the exposed ENET cable to another part of the lower dashboard trim. Use any of the existing holes in the lower part of the dash. The red circles below show where zip-ties can be used to secure the cable.

15. Cut any excess from the two small zip-ties.

16. In the center console armrest compartment, push the ENET cable toward the passenger side and reinstall the plastic tray. The tray will slightly bulge due to the ENET cable, but it is not that noticeable. Using a flat ENET cable will minimize any bulging on the trim-work.

17. Connect the BM3 Wifi Agent and test operation.

Big thanks to Kies Motorsports for sharing their F30 instructions and inspiring me to give it a try and create this DIY guide!

Last edited by x35250; 05-31-2020 at 12:14 AM..
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