Stereo System install 'from scratch' - Defender 110

Ontheway

Active member
After six years of ownership my 1986 110 SW finally has a stereo system. I'm posting as a separate installation thread here because I think the system I installed is about as simple as they come and is worth repeating for others with ROW trucks who are looking for an affordable, reliable, simple stereo setup. I found very few 'from scratch' install walkthroughs on the web.

I decided early-on that I didn't want or need a full-on head unit in my truck. I don't care for the MUDUK dashes, raptor dashes, etc. Moreover, I just don't need much more than ipod/bluetooth. I chose the Kenwood compact amp with bluetooth for my install. It is quite small, comes with a full and foolproof wiring harness, and comes with a wired remote and bluetooth connectivity. There are cheaper options (and more expensive options), but I thought this product had the best blend of size, price, power output, etc.

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I also went with Kenwood for the speakers. For the front, I bought the Kenwood KFC-1395PS. It is a 5.5" speaker with a relatively shallow mounting depth. To mount these, I also purchased a 5" hole saw and a hole-saw mandrel. I liked these speakers because they had a 'plain jane' mesh grill, weren't too flashy, and were full-range.

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I started by using Kenwood's included template which I found very helpful for marking drill locations. I mocked up about 100 times before making the first cuts. I found that 'scoring' the steel sheet behind the dash padding helped to make a better cut - basically just applying light pressure at high RPM for a bit before bearing down on the drill. I had the dash panel removed for this so I could clear any wires and ensure the place I was drilling was free. I removed the wiper motor cover and drilled the hole on that piece while it was out of the truck.

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To install the left speaker you'll need a 1" spacer.. If I were to do it again I'd try and find a 1.25" spacer if they are out there. Even at 1" the speaker magnet is making contact with the wiper motor. Overall though, the 1" spacer provides a pretty clean install. BEWARE: this is a common water drain point. This is a good time to get some silicon or other sealant and work on sealing off this area so you don't get water damage on your newly installed speakers.

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Pulling speaker wire was a pretty harmless affair that needs little explanation. I utilized the left-most bulkhead grommet and routed all wires behind the dash panel. Coming out of the bulkhead, I bundled and wrapped the speaker wires and routed them along the left side of the bell housing and into the battery box. I don't love pulling the whole dash apart, so I routed the left front speaker behind by center gauges tucked out of sight. Make sure to label the terminal ends of each wire so as to make your final connection easier... the Kenwood amp has a front/rear fade and is stereo sound so the wiring does matter.

I ended up mounting the amp itself closest to the door in the battery box. I utilized industrial velcro so I could access it easier for trouble-shooting, remote removal, fade adjustment, etc.

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I chose to do a full twist-and-solder connection from the speaker cables to the Amp wiring harness. I tried to keep excess to a minimum; ultimately bundling the joints and routing the whole package in front of the battery out of sight.

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The wiring of the amp itself is very easy. I've set up my battery box with a fused bus for 'direct' access to battery power, as well as a non-fused low amperage bus for keyed access to 12V. For this install, I wired the yellow wire to the fused bus (at 15A) and the blue switching wire to the keyed bus. I may eventually add a carling switch for the radio itself so I can listen without the key turned... but I considered the stereo an easy thing to forget about which would result in a dead battery.

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I also purchased the 6.5" Kenwood's but haven't added them yet. After an initial test drive today I don't think you need them... but they would be nice to have. The 5.5" speakers don't have much depth to work against the deep drone of the rover's tires and engine noise. You can crank them up... but then they just sound like cranked up 5.5" speakers.

The bluetooth pairing is very, very easy. I'm most pleased with this as I'd read that some of the cheaper setups were glitchy. This one seems very professional. So far, the amp finds my phone automatically each time I turn on the car. Beware: it is like many bluetooth systems in that it 'presses play' on whatever you had on last when it activates. In other words, music starts right away. One more reason to consider adding a switch the blue wire instead making it keyed.

I'm still working on modifying my tuffy box to accept the new remote. In the meantime, it sits next to me and that works just fine. It is a very nice rubberized unit.

Done right, this was a half-day job with a total cost of $281.49. Having music to listen to in at each of NOVA's 1000 stop lights and standstill beltway traffic = priceless! I should have spent the money elsewhere... but I'm very happy to have this done.

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Overall Shopping list below:
 

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RBBailey

NAS-ROW Addict
Callsign: KF7KFZ
Cool! I had thought this would work, and my brother and I looked into this for our cars a while back, but got distracted by other things. Good to know it's as easy as it seems it should be!
 

jymmiejamz

Founding Member
Callsign: KN4JHI
That's pretty cool. I can't ever see needing anything other than a Bluetooth audio connection.
 

UnfrozenCaveman

Well-known member
Okay....I may be the only luddite here...

With "bluetooth" only, does that mean that the input source for signal to the amp is from your phone / other device?

Thanks!
 

chris snell

Administrator
Callsign: NW5W
Staff member
I like that little Bluetooth amp but there are a few things I would have done differently:


- I would get door cards that had the spots for speaker cut-outs and use those. It's more factory-correct (at least for NAS...never seen a ROW with a stereo) and you'll get better sound with the tweeters pointed horizontally than pointed down at your feet. I would find some of those rubber slinky things like the NAS trucks used to route the wires between the doors and the edge of the bulkhead.


- I would use expandable braided sleeving and heatshrink instead of that split-loom sleeving. It makes for a much more professional-looking install: http://www.genuinedealz.com/marine-electrical-supply/expandable-braided-sleeving



- I'd trim the excess wire instead of doubling it over and zip-tying to the bundle.
 

Jeff B

Well-known member
You can listen to AM radio station via your phone with apps such as TunedIn Radio. That is how I listen to Rush.


True....


I'd still like some kind of small head unit maybe.


Dave, in your radio research, is there a small media player head unit that might fit the Mud-UK center?


I have a 97 NAS but I have ARB switches down where the stock radio would've been.
I was wondering if there is a media player only unit that is shallow enough to fit in the upper Mud piece...right above my Carling switches; but depth is limited.

I don't want to hack up any of the dash...I have door speaker locations and rear speakers(its an ST)


.
 

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modernbeat

Active member
Jeff, you will want to look at marine radios. They used to all be DIN sized, but waterproof-ish. Now they make them in all sorts of sizes to fit smaller spaces.
 

CDN38

Well-known member
Did you put speakers in the back? Being able to put 6 1/2 drivers up top makes all the difference in the world.

If you are interested in one of these set ups, let me know.
 

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Abrooks

Member
I'm using that same receiver in a custom center console in my BMW 2002. It's really well put together and surprisingly small.
 
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