2016 Tucson Power wire through firewall - Page 2 - Hyundai Forums : Hyundai Forum
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post #11 of 13 (permalink) Old 09-29-2016, 09:45 AM Thread Starter
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Bumping for Thursday! Anyone know a site I can pay for the access the wiring diagrams for a 2016 Tucson?

Also, do any of you know the proper way to set up the line out converter? I bought a rockford fosgate class D single channel amp... Do I only need to splice into one rear speaker for the rca output?? Also, other than adjusting the gain and whatnot, is there anything else I need to do with the LOC? Thanks a lot
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post #12 of 13 (permalink) Old 03-16-2017, 07:56 PM
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Originally Posted by Tucson Tony View Post
Sorry, can't help with wiring diagrams but maybe with access from the engine compartment. Look on the drivers side of the firewall, just to the right of the power brake booster. You should see the main harness pass thru but just to the right of that, you should see the hood release cable pass thru. It's very flexible and allows access just behind the battery. I used it for my trailer wiring harness and it worked flawlessly.
Originally Posted by navein View Post
Hi Cris

please find the link below for the fire wall. also i posted it on the "sounds" forum.


follow the link at your own risk.
I also have the problem with the firewall passthrough. It seems that the RHD Tucson have a different arrangement. See attached pictures:

(a) Pic_1 shows the overview of the engine compartment - Battery, Air Filter and Fuse box on the right. The steering wheel would be in the upper left.
(b) Pic_2 is a gradual zoom in on the right hand side showing the Air Filter and just behind that is some pipes and the first potential firewall entry point.
(c) Pic_3 is close up of the first firewall entry shown in pic 2. This will come in on the glove box side behind the air bag. Its not visible from the footwell, or behind the glove box.
(d) Pic_4 is next two potential firewall entry points just to the left of the one in Pic 3.
(e) Pic_5 is a another view of of Pic 4
(f) Pic_6 that wire that I am holding is the hood release wire - it goes into the firewall somewhere behind that fluid container. I can barely feel back there much less feed a wire through that part.
(g) Pic_7 shows the driver side footwell where the hood release cable and alarm cable come into the cabin.

I am not sure which one of the ones that I have show matches the one used by Navein - I suspect it is the one show in Pic_3 as the most promising. I have two issues - first if I unscrew the plastic cover - are the bolts locked in posiition so I can tight back the nuts? The other issue is where it comes out in the cabin. Even with the deck removed, I am not sure I can see the entry point like how Navein has shown.

The only other option is to use the one suggested by Tucson_Tony. there are two issues- (1) Pushing the cable in from the engine side is going to be hard because of accessibility. I could try to push from the cabin out but I don't know how successful. The second is spacing - the first cable is for a front camera but I will also need space for two front sensor wires as well. I don't think there is sufficient space for those as well.

Any suggestions?

Attached Images
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File Type: jpg Pic_2.jpg (217.3 KB, 14 views)
File Type: jpg Pic_3.jpg (197.9 KB, 13 views)
File Type: jpg Pic_4.jpg (238.1 KB, 16 views)
File Type: jpg Pic_5.jpg (224.2 KB, 16 views)
File Type: jpg Pic_6.jpg (146.5 KB, 15 views)
File Type: jpg Pic_7.jpg (242.6 KB, 13 views)
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post #13 of 13 (permalink) Old 03-16-2017, 11:39 PM
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Originally Posted by Jason_R28 View Post
Couldn't get the 4 gauge wire through the factory grommet so I did this instead:

Goes into a spot in the left fender.

Comes through the the side of the foam insulation into a rubber grommet that had nothing previously so I made a hole in the middle of it for my power wire.

Then below all the panels to the back by the spare tyre.

Sent from my iPhone using Tapatalk
Also here are the wiring diagrams for the 8" Navigation with premium audio

as well as the regular 6 speaker head unit set up (ie no stock amplifier)

Also if you need more information, you can head over to this thread "Adding Subwoofer to factory location?" started by gggplaya if you need more info. A few of us including gggplaya, Tucson Tony and myself partially documented our installs on that thread.
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