Sponsored

JL Stealthbox Install - Tips and Tricks

Fenix

Well-Known Member
Joined
Jul 3, 2016
Threads
8
Messages
203
Reaction score
45
Location
Ohio
Vehicle(s)
2016 GT Premium Shadow Black
Installed the JL Stealthbox and JL XD300/1v2 Amp... WOW does it sound good! A little bass really evens out the stock system.

Just wanted to make a thread with some tips for those who are looking install the stealthbox.

My car is a premium so I decided to go the route of grabbing signals pre-amp. It was easy enough to get to in the drivers foot well. To do this I purchased the Molex connectors that are used in the factory audio harness (Thanks [MENTION=20499]mumbles[/MENTION]!). The harness is really just a pass through, all pins are loaded, and has female RCA's spliced in for the amp signal input. The RCA is ran from the kick panel, down the driver side sill to the trunk. Connectors and pins I used for the harness are below.

Running the power cable is pretty straight forward, I used the grommet in the passenger side wheel well like a lot of guys do. Basically get the car off the ground and remove the passenger wheel well liner and the grommet is right there. Lucky me a buddy has a lift (and a '66 Fastback). I put some butyl rope on the cut grommet to seal it up. Also wrapped the cable with Tesa tape for a factory look. Once the rear seat was removed by depressing the two clips under each seat, I followed the factory harness into the trunk with zip ties along the way.

One tip I have for running the power wire is to attach a socket extension to the wire end. It helps a lot to have something to push through the grommet and past the insulation and carpet.

The ground is the same as mike2017gt's thread. He has a great thread so check it out for more details. It uses the tie down bar for the spare tire or inflation kit. The thread size is M6x1 and utlizes the left side thru hole. Just grind the e-coat away and clean it up with some alcohol. I used a lock washer to secure the terminal.

I tapped into the back up camera power wire for my 12v remote signal. It is a blue with white stripe wire found under the rear passenger speaker harness. Easy enough to get to. I was originally going to use the factory amp remote but discovered it was on a different connector (I think it was in the brown one if you look at the amp). It's 6v if anyone is wondering. The JL XD300 amp turns on right at 6v.

I searched for where guys were mounting the remote level control for the sub and there were a lot of different places. I eventually settled inside the console as it was out of sight and easy to get to if I needed to adjust the sub. I decided to remove the 12v plug and re-purpose that hole for my level control. The whole panel that houses the USB port and 12v plug just pops right out. The plug itself was kind of a pain to remove even though it's just held in there with a couple small tabs. I cut a small hole under the console carpet and the phone wire for the part just runs under the carpet back to the trunk.

Installing the stealthbox itself is a complete pain in the ass to be honest. The thing is so tight I had to grab a prybar, wrap it with electrical tape, and have a buddy pry it around until all the holes lined up. The instructions say to just "Guide it in place"...yea guide it with a pry bar! Other than that part the install manual is spot on and everything ended up fitting really nice.

Overall the install wasn't too bad. I'd say it took 6 hours total. Some of that time I spent wrapping the power and ground cables with Tesa tape to make everything look a bit cleaner. The sub is paired nicely with the 300W JL amp. I thought it would be a bit under powered but it really sounds great.
imagejpeg_0.jpg
IMG_20170415_155323_R.jpg
IMG_20170415_170533_R.jpg
IMG_20170415_174011_R.jpg
IMG_20170422_105554_R.jpg
IMG_20170422_145622_R.jpg
IMG_20170422_145635_R.jpg
IMG_20170415_183254_R.jpg
Sponsored

 
OP
OP

Fenix

Well-Known Member
Joined
Jul 3, 2016
Threads
8
Messages
203
Reaction score
45
Location
Ohio
Vehicle(s)
2016 GT Premium Shadow Black

scott_0

Well-Known Member
Joined
Apr 15, 2016
Threads
19
Messages
1,115
Reaction score
277
Location
Oxford, Pennsylvania
Vehicle(s)
2016 Mustang GT
nice job, awesome write up!
 

Jmeo

You said member ;)
Joined
May 28, 2014
Threads
250
Messages
8,572
Reaction score
9,094
Location
Massachusetts
First Name
Jaime
Vehicle(s)
2020 GT500, 2022 F150 PowerBoost
Vehicle Showcase
2

Jmeo

You said member ;)
Joined
May 28, 2014
Threads
250
Messages
8,572
Reaction score
9,094
Location
Massachusetts
First Name
Jaime
Vehicle(s)
2020 GT500, 2022 F150 PowerBoost
Vehicle Showcase
2
Very nice write up I thank you very much. I absolutely love the harness you found to grab RCA signal. Would you be able to provide a link for this?

Ingenious idea for the bass knob :thumbsup:


Thanks again :cheers:
 

Sponsored

OP
OP

Fenix

Well-Known Member
Joined
Jul 3, 2016
Threads
8
Messages
203
Reaction score
45
Location
Ohio
Vehicle(s)
2016 GT Premium Shadow Black
May I ask what the use is for these? Is it a way to seamlessly grab a remote turn on lead for the amp?
Those connectors are what I used to make a pass through cable. I soldered in the RCA's to the right rear speaker wires in my harness. Check out the sticky for pin out info.

The remote turn on is easiest to grab under the rear passenger speaker. It's a blue wire with white stripe, 12v ignition on, 0v ignition off.
 

mumbles

Well-Known Member
Joined
Dec 22, 2015
Threads
16
Messages
933
Reaction score
266
Location
ATL
First Name
Eric
Vehicle(s)
'16 GT Prem OW
Awesome job and writeup!
 

BlackS550

Well-Known Member
Joined
Mar 14, 2015
Threads
5
Messages
560
Reaction score
109
Location
san jose
Vehicle(s)
2015 black s550 PP
great writeup , it looks awesome too!

im getting my stealthbox and phoenix gold sx2 amp installed on tuesday, i cannot wait
 

BlackS550

Well-Known Member
Joined
Mar 14, 2015
Threads
5
Messages
560
Reaction score
109
Location
san jose
Vehicle(s)
2015 black s550 PP
couple questions

do you have any issues w over heating w the amp installed there?

did u have any issues with active noise cancellation messing with your audio or turning your amp/bass lower?
[MENTION=25138]Fenix[/MENTION]
 
OP
OP

Fenix

Well-Known Member
Joined
Jul 3, 2016
Threads
8
Messages
203
Reaction score
45
Location
Ohio
Vehicle(s)
2016 GT Premium Shadow Black
I have not had any issues with the amp overheating. I had that concern initially but it seems to be fine. I went on a 10 hour (one way) road trip recently and the stereo was blasting the whole time so if it would have overheated I'd like to think it would have done it then.

I haven't noticed any funky stuff going on with the active noise canceling but honestly I'm not sure what it does in the car. The bass seems to stay where I put it
 

Sponsored

BlackS550

Well-Known Member
Joined
Mar 14, 2015
Threads
5
Messages
560
Reaction score
109
Location
san jose
Vehicle(s)
2015 black s550 PP
I think this sentence just solved all my problems...


"My car is a premium so I decided to go the route of grabbing signals pre-amp. "


took it back to install shop and theyre like yea theres two ways we could wire it, and we didnt do it that way. theyre re-wiring it right now and think that should solve my issue (when motor is on, amp/bass cut out.. when motor is off, sounds fing amazing)
 
OP
OP

Fenix

Well-Known Member
Joined
Jul 3, 2016
Threads
8
Messages
203
Reaction score
45
Location
Ohio
Vehicle(s)
2016 GT Premium Shadow Black
Did they use a line out converter to grab signals after the amp?
 

BlackS550

Well-Known Member
Joined
Mar 14, 2015
Threads
5
Messages
560
Reaction score
109
Location
san jose
Vehicle(s)
2015 black s550 PP
Did they use a line out converter to grab signals after the amp?
if thats the wrong way to do it... then yes lol

they got it fixed now thankfully
 
OP
OP

Fenix

Well-Known Member
Joined
Jul 3, 2016
Threads
8
Messages
203
Reaction score
45
Location
Ohio
Vehicle(s)
2016 GT Premium Shadow Black
Nice, glad to hear it got resolved!
 

floydbanks28

Active Member
Joined
Jun 2, 2017
Threads
2
Messages
31
Reaction score
0
Location
MI
Vehicle(s)
2016 eco boost premium
Thanks for the info, I just bought the connectors you suggested to make the pass through. Great write up wow. Life saver man. Any way you could go into more detail about how you made the pass through cable?
Sponsored

 
 




Top