GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Tip on installing a Aftermarket Navigation HU on a GS with Nakamichi

Thread Tools
 
Search this Thread
 
Old 05-16-17, 12:02 PM
  #16  
Sceptre
Pole Position
Thread Starter
iTrader: (2)
 
Sceptre's Avatar
 
Join Date: Nov 2006
Location: ATX
Posts: 338
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by LexusK
Hey Sceptre,

Thanks for the quick response!

In regards to your comment about getting the Metra Harness for $5, is this the one? https://www.amazon.com/Metra-70-1761.../dp/B0002BEQJ8

It seems like its got the same plugs as the harness I was looking at picking up from someone local. I'm only considering it because the guy totaled his GS before getting the chance to install his double din. He's selling me his faceplate, brackets, harness, a custom heatshield, and that harness in the picture I attached, all for $25. He even said he made it specifically for his GS that had Nakamichi. Basically I think he's already done all the work for me? What do you think? Is that supposed to run all the way to the trunk?
Yes, that is the one. You'll need another faceplate kit for the GS. If the guy is selling you everything for $25, It's not worth it. You can get a new double din kit off amazon for $12.63.
https://smile.amazon.com/Metra-95-81...+GS+double+din
and the wiring harness and still be cheaper than $25. That wiring harness is also connected to the plug for his specific aftermarket headunit. So unless you get the same HU, you'll need to cut that harness.
I don't know what custom heatshield you are talking about.

No, that wire is not going to go to the trunk. Honestly I don't think that one is for the GS with Nak. That wiring looks way too long. The GS with non Nak has the bypass behind the glovebox, so I suspect that is what this harness is for but I'm not sure.
Old 05-16-17, 12:12 PM
  #17  
LexusK
Racer
iTrader: (14)
 
LexusK's Avatar
 
Join Date: Jun 2008
Location: Texas
Posts: 1,496
Received 21 Likes on 19 Posts
Default

Got it. I was only considering the whole package because I figured I would just flip the DD kit and bracket he has. I didn't know they were so cheap. I already have the JDM DD kit myself.

I'll listen to you and just get the Metra harness off Amazon. I had a shop quote me $65 just to do the bypass which seemed a bit excessive, so I thought that buying the harness already completed would save me that fee. I do not trust myself enough to do it myself even with your instructions lol.

The heat shield is just that reflective shield for your front windshield. My old Walmart one has lasted me almost 8 years and is now falling apart. Brand new, the custom fit heat shield is $35. Guy said $15 for the heat shield and another $10 for the wiring stuff.
Old 05-16-17, 12:16 PM
  #18  
Sceptre
Pole Position
Thread Starter
iTrader: (2)
 
Sceptre's Avatar
 
Join Date: Nov 2006
Location: ATX
Posts: 338
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by LexusK
Got it. I was only considering the whole package because I figured I would just flip the DD kit and bracket he has. I didn't know they were so cheap. I already have the JDM DD kit myself.

I'll listen to you and just get the Metra harness off Amazon. I had a shop quote me $65 just to do the bypass which seemed a bit excessive, so I thought that buying the harness already completed would save me that fee. I do not trust myself enough to do it myself even with your instructions lol.

The heat shield is just that reflective shield for your front windshield. My old Walmart one has lasted me almost 8 years and is now falling apart. Brand new, the custom fit heat shield is $35. Guy said $15 for the heat shield and another $10 for the wiring stuff.
$65 is not too bad. Considering you'll need to get some decent tools to do a good job or else it could get frustrating. If they are going to run the RCA cable and Remote cable for the subwoofer too for $65 would be a steal of a deal.
Good luck.
Old 05-16-17, 12:19 PM
  #19  
LexusK
Racer
iTrader: (14)
 
LexusK's Avatar
 
Join Date: Jun 2008
Location: Texas
Posts: 1,496
Received 21 Likes on 19 Posts
Default

This isn't the same RCA cable and Remote cable that's currently connected to my JL sub and amp is it?

EDIT: I just re read your post #14 and got it lol.

Last edited by LexusK; 05-18-17 at 07:35 AM.
Old 01-25-18, 10:15 PM
  #20  
socal3
Intermediate
iTrader: (2)
 
socal3's Avatar
 
Join Date: Dec 2008
Location: ca
Posts: 452
Received 5 Likes on 4 Posts
Default

I will be doing this soon. Doesn't seem like fun trying to source a non navi climate control
Old 02-21-18, 11:16 AM
  #21  
sbagdon
Advanced
 
sbagdon's Avatar
 
Join Date: Mar 2016
Location: MI
Posts: 520
Received 33 Likes on 31 Posts
Default

This is something I was thinking of doing... replacing the head unit, if only for bluetooth (the tape/plug interface has terrible grounding issues)... yet I'd really miss the cd-changer. Anyway, when I got the car, the factory amp had terrible clipping, and was able to fix the amp with a $10 junk-yard factory amp. I kept the old one, so that I could de-solder the plugs from the factory amp, and build a Metra-type adapter, and still (theoretically) install the old system, without cutting wires. Just never got around to ti.
Old 11-23-22, 11:19 AM
  #22  
TimberJon
Rookie
 
TimberJon's Avatar
 
Join Date: Jul 2014
Location: SoCal
Posts: 27
Likes: 0
Received 1 Like on 1 Post
Default

Hi All,
Coming back here due to a car swap. Old GS was Pioneer, new is Nak. I pulled my entire loom out from trunk to front and laid it all back into the new car and then discovered the amp is in the trunk. I see the notes on how to bridge them there in the trunk, but my loom has the signal wires routing from the front of the car. So that I'm not looping around longer than necessary, should I not just splice my amp outputs directly into the speaker wires there near the OEM amp location in the trunk? -__- I didn't mark what is what so I'll need to re-learn my setup. It's been a while. Thanks for your input.

@MoneyBagz I see your matrix man and printed that thing out, hoping that's all I need to get this done.
Old 11-25-22, 02:55 PM
  #23  
jefthim
Intermediate
 
jefthim's Avatar
 
Join Date: Feb 2006
Location: Texas
Posts: 283
Received 42 Likes on 35 Posts
Default

Originally Posted by TimberJon
Hi All,
Coming back here due to a car swap. Old GS was Pioneer, new is Nak. I pulled my entire loom out from trunk to front and laid it all back into the new car and then discovered the amp is in the trunk. I see the notes on how to bridge them there in the trunk, but my loom has the signal wires routing from the front of the car. So that I'm not looping around longer than necessary, should I not just splice my amp outputs directly into the speaker wires there near the OEM amp location in the trunk? -__- I didn't mark what is what so I'll need to re-learn my setup. It's been a while. Thanks for your input.

@MoneyBagz I see your matrix man and printed that thing out, hoping that's all I need to get this done.
I did my about two months ago and this was my first Nak as well. If I understand your question correctly - you're asking if it would make more sense to run the wires from the amp output to the speaker connections in the trunk? If using an amp yes. I believe the folks that wrote this up years ago were just wiring using the signal for the aftermarket headunit. If your plan is to use RCAs to amps in the trunk then wire from the amp to the factory wiring - yes that would make more sense to connect in the trunk rather than run wire back to the front of the car to tap in the behind the dash.


Old 11-28-22, 11:50 PM
  #24  
TimberJon
Rookie
 
TimberJon's Avatar
 
Join Date: Jul 2014
Location: SoCal
Posts: 27
Likes: 0
Received 1 Like on 1 Post
Default

Ok I thought so. I know to reduce the run and eliminate as many connections as possible. I’ll tap into the sites there instead. I just seem to have a spare aftermarket connector up front behind the HU. It splits off A) into my multi-amp and also into a 4-wire splice that originally was in the loom behind the glovebox. Need to figure out wth that was for.. then should be good to finalize in the trunk and tap the batt. Thanks! o7
A little discovery and I should have it back online.
Old 12-03-22, 04:15 PM
  #25  
TimberJon
Rookie
 
TimberJon's Avatar
 
Join Date: Jul 2014
Location: SoCal
Posts: 27
Likes: 0
Received 1 Like on 1 Post
Default

Ok update.. pulled the run back from the front to the trunk and finished connections. Reconnected head unit up front and now it does not power on at all. I don’t have a multimeter atm but I can get one. Is the cause likely because I had it wired for the pioneer HU and this car had the Nak? As far as I can tell the same metra harness is feeding the red and yellow wires that are supposed to supply power to the HU. Pics soon if needed.
Old 12-07-22, 12:40 PM
  #26  
jefthim
Intermediate
 
jefthim's Avatar
 
Join Date: Feb 2006
Location: Texas
Posts: 283
Received 42 Likes on 35 Posts
Default

I used the following to get my power and ground wires:

The power wires are on another connector These wires on the left are from the orange stock car harness which I cut/connected to the radio harness wires on the right

1. 12v (ignition) = Grey-------------------------------------------Red (ACC)
2. Constant (Battery) = Blue/yellow------------------Yellow (Battery+) Constant?
3. Illumination – Green-------------------------------Orange/White (Illumination)



This wire on the left was from the large white stock harness, cut/connected to the radio harness on the right.

1. Negative (Ground) = Brown-----------------------------------Black (Ground)


Last edited by jefthim; 05-07-23 at 07:40 PM.
Old 05-05-23, 07:32 AM
  #27  
FalconF
4th Gear
 
FalconF's Avatar
 
Join Date: Jun 2021
Location: NV
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

I will be bypassing the amp this weekend and I want to make sure I understand this correctly. Do I need to run the ACC, Constant, and Illumination from the stock amp to the new head unit?
Old 05-07-23, 07:46 AM
  #28  
jefthim
Intermediate
 
jefthim's Avatar
 
Join Date: Feb 2006
Location: Texas
Posts: 283
Received 42 Likes on 35 Posts
Default

No, tap the ACC from behind the dash.
Old 05-10-23, 04:48 PM
  #29  
FalconF
4th Gear
 
FalconF's Avatar
 
Join Date: Jun 2021
Location: NV
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks, I got it installed and I love it. I also created this as its a little easier to use.



Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Lveyolfe
GS - 2nd Gen (1998-2005)
53
05-23-23 07:00 PM
rome58
Lexus Audio, Video, Security & Electronics
12
08-12-12 04:32 PM
kwamdoo74
Lexus Audio, Video, Security & Electronics
2
02-05-07 09:37 AM
jay_hova_5
Lexus Audio, Video, Security & Electronics
5
10-19-05 02:37 PM



Quick Reply: Tip on installing a Aftermarket Navigation HU on a GS with Nakamichi



All times are GMT -7. The time now is 01:39 PM.