How to Install an Aftermarket Stereo
1990-1994 Lexus LS400

After tons of searching in stores and online I found a place that claimed to have a LS install kit and wiring harness so I ordered them. I bought them from SFX Audio, it was under $50. Some of the pics for this tutorial were lost to a hard drive crash, but all the instructions are here.

Tools Needed:

• Screwdrivers

Parts/Supplies Needed:

• Head unit
• Wiring harness
• Install kit
• Wire connectors / or solder
• Electrical tape

1) Using a small flat head screwdriver wedge the screwdriver in the location specified in the pic. Then carefully pry the wood trim up. It should pop right out.

2) Do the same on the passenger side.

3) Lift the trim up slightly, slide it back, remove and set it aside.

4) Turn the key to the ACC position and put the shifter in "L." Using two hands pull straight back on the ashtray and it will pop out of the two clips. Unclip all the wiring connectors and set it aside.

5) Put the vents in the down position. Using both hands pull out the vents. Unclip the emergency flasher wiring connector and set the vents aside.

What it looks like with the vents and ashtray removed. The deck is already installed in this pic because I had to retake the pics.

6) Unscrew these bottom screws.

7) And unscrew these top screws.

8) Disconnect all connectors behind the climate control unit and stereo. Take the assembly over to your work bench.

9 Remove the 8 screws that hold the stereo on the brackets.

10) Attach the install kit to the factory assembly using the kit's instructions.

To make the kit fit better I used a bolt as a spacer.

Install Kit I used. It's all metal and fit perfectly. I purchased it from SFX Audio.

Here's the wiring harness I used, it was also purchased from SFX Audio. This harness is a perfect fit, but you do lose the subwoofer. This harness is marked as TA02 on the SFX Audio site.

11) Connect the Scosche wiring harness to the wiring harness that came with your deck. Solder the wires for the best possible connections.

12) Put the assembly back into the dash and screw in the 4 screws.

13) Run wires through the kit opening and make all connections.

14) Test to see if everything is working! If everything checks out OK slide the deck all the way into the DIN sleeve and put everything back together.

Finished!

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