Originally Posted by panasonic

Hi does anyone have in PDF format, wiring schematic for 1997 LS400 ?
I'm looking for the speaker and subwoofer wire to install a DVD/MP3 player.

Thanks.

Originally Posted by PureDrifter

Concept:
How this works is that 4 SPDT (single pole double throw) 12v Relays are used to switch between the factory CD changer signal and external source (must be preamp) before the sound goes into the OEM amplifier.

because of this, you MUST have a somewhat working CD changer, as long as it turns on you're fine.

This SHOULD work on any lexus model that uses a CD changer that gives out a preamp. output (pretty much all iirc).
Confirmed Applications:
LS400 (all years incl. NAK** and Navi cars)
GS300/400 (98-02 incl. Nak**, ML, and Navi)
GS300 (1st gen https://www.clublexus.com/forums/sho...6&postcount=16)
SC300/400 (all years)**

**=will intercept signal between CD Changer and Headunit, not amp, needs to be done on SC300/400 (all), 98-00 GS3/4 with NAK, and 98-00 LS400 with NAK (NOT needed on non-nak 98-00 LS/GS)

Should work on:
IS300 (all years)
LX450/470 (pre 02)
SC430 (all years)

if i missed any its not because they wont work, its because i havent checked

Here is a basic overview of how the whole thing will look like, including specific instructions on wiring the trigger switch


Materials:

1. 4x SPDT Relays @ $1.50/each = $6 (bulk)
2. 14x crimp on (female) spade connectors @ $3.25
3. 14x crimp on butt connectors @ $3.25
4. 4-5ft 18awg or better Speaker wire @ $.75/ft
5. 14-16awg wire for 12v power
6. spst switch (i used radio shack Model: 275-634)
7. 2x solder type Phono plugs @ $1.50/pair (4.99/4 radioshack Model: 274-319)
8. 2x RCA female coupler @$4/pair (radioshack Model: 274-874)
9. superglue-$1.50 (useful tip: avoid gel)
10. 2sq. in. 2sided padded tape @ $2 (optional)
11. Ipod dock to RCA output cable (for ipod specific install, use this because u get line-lvl (preamp) outputs )

***Since creating this tutorial Radioshack has started stocking FEMALE Phono plugs, which would mean you can save a bit of money by not having to use male plugs and female couplers. Radio shack model no. 274-337
Tools:

1. Soldering Iron
2. Flux
3. Solder
4. Wire Crimper
5. Wire Cutters
6. Wire Strippers
7. Needlenose Pliers
8. small knife/exacto knife
9. bravery
10. socket set (optional for install)
11. medium size screwdrivers (philips+flathead)

Props:
Salimshah for telling me to go check my wiring again
Horta for moral support


ADDENDUM:



^flashy layouts courtesy of member rgarjr

also, let me make it clear. I AM NOT SELLING THIS.

i have materials enough for 1-2 more ppl and they have contacted me during the development phase of my little project.

If, however, there is enough demand AND the CL Admin/Moderators don't mind there is possibility to change that.

Donations are accepted to help cover the cost of development
pm me for paypal

Originally Posted by tonysgs300

holy shiite thats alot of work to get an ipod working? wouldnt it be better or at least faster to buy a new cd player?

Originally Posted by PureDrifter

if you think this is bad good luck getting your sub working with an aftermarket headunit using the oem amp...

Originally Posted by mkaye

is it still a problem if the HU has sub outputs?

mark

Originally Posted by 1JDMAristo

Hey joebob1 Thanks alot im going to be doing this mod soon and thanks PureDrifter for your R&D Keep up the good work alot of people here now have music Clearer and Cleaner. you have made alot of people Happy