I just wanted to take a moment to thank docron for the amazing JB4 OBD wire routing DIY post. The step-by-step instructions were incredibly detailed and clear, and I really appreciate the effort that went into explaining everything so thoroughly. It saved me a lot of time and frustration, and I’m sure others will benefit from it too. I especially love the approach of avoiding drilling holes – that's exactly the kind of solution I was looking for. Thanks to your guide, I was able to successfully route the cable yesterday. Thanks again for sharing your knowledge!
Doc’s JB4 OBD wire routing DIY
- Thread starter docron
- Start date
I presume you’d need an OBD extension cable if you have a UK car I.e with the steering wheel on the correct side.
Like everyone else said, thank you so much for this post. Easy install! (FYI, I did end up cutting a corner off of the upper fiberglass to more easily feed the cable through as the pry method wasn't opening it up wide enough for me to make that possible.) It hides behind the facia and is incredibly small. No one will ever know. (After sanding the edges, you cant really tell it wasn't from the factory like that.)
All in all, beats another hole in the firewall!
All in all, beats another hole in the firewall!
How on earth did you pry this panel far enough back? I can't get it beyond being 3-4mm too small and im using a tonne of force to move the panel - all bolts fully undone!
I personally took a dremel and cut a tiny piece of the inside lip. No one will ever know the difference.
I did this today following the method described and though it was a hassle, it does work nicely. Dremeling out a little corner of the quarter panel would probably be recommended because I had to pry it out very hard to barely get that small plug through there.
Any photo of the cutout to see what I am dealing with? Looking to install this next week. -thanks
I could probably pop that panel loose for you. It’s tiny though. Give me a few
There is an also a rubber cover that can be sliced to pass the small end of the cable, it should be located on either side of the vehicle. For left hand drive cars, I pop the panel that contains the rear fuse box. Doing this way will have the wire coming out close to the bottom left side of the engine where I believe some cooling lines run.
- Thread starter
- #31
Just a precautionary FYI. While installing the Optimotion rearview camera signal cable a few weeks ago, I used the same approach to route camera wire into cabin but this time on passenger side.
While removing the door jam panel, yellow retention clips were a tad tougher to disengage the panel on the passenger side. I cracked the panel maybe 5mm at the thinnest point while removing.
Stick you hand from the bottom under the panel to disengage that clip at the midpoint. Don't try to disengage panel from the top down.
While removing the door jam panel, yellow retention clips were a tad tougher to disengage the panel on the passenger side. I cracked the panel maybe 5mm at the thinnest point while removing.
Stick you hand from the bottom under the panel to disengage that clip at the midpoint. Don't try to disengage panel from the top down.
Completed this install technique recently; very straightforward, simple.
One note: used a rat tail file (instead of Dremel)to open top area to pass cable through-simple and leaves smooth edge-still, shrouded cable with foam wrap around at pass through area…..
One note: used a rat tail file (instead of Dremel)to open top area to pass cable through-simple and leaves smooth edge-still, shrouded cable with foam wrap around at pass through area…..
I couldn't make the OBD go through. I had to drill a small hole on the top of the side panel.
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