'95 Amplifier Wiring For Adding Rca Inputs?

[lebowski2]

Hi Folks,

So I'm looking to replace the radio inputs to the stock amplifier (on a '95 ES300) with a standard 3.5mm audio -> RCA cable (http://www.amazon.co...e/dp/B000V0G2C4). Are there RCA inputs on the stock amp that I can use? Would I need to just cut off the RCA heads and splice the cable in to join the radio cables feeding into the amp? Also, is there a wiring diagram or picture floating around that would help to identify the input cables to the amp?

Thanks!

Sean

[lexis lexus]

No rca imputs on that amp. You can cut the wires and put in rca females. I have a wiring diagram somewhere, in a digital fsm, but there's no index and finding it is like looking for a needle. However, you can probably google the schematic. I'll keep looking... but you could also just back probe the connector w/ a small speaker until you find each chanel while playing the original radio. I believe the inputs are in the connector closest to the passenger side door.

LL

[lebowski2]

I believe the attached image is my wiring setup. I'm hoping to just do what this fellow did here: http://www.clublexus.com/forums/gs-second-generation/621789-aux-input-for-under-5-00-you-guys-wont-be-disappointed-pic-intensive.html, but I'm confused about the wiring.

In his case, he has clearly labeled CDR+, CDR-, CDL+, CDL- wires into the amp. The ES300 seems to have RearR, RearL, FrontR, FrontL wires as the inputs to the amp. Unless those are little wire bundles with + and - in them... do they just use a common ground? Would I want to then splice in the Right+ to RearR and FrontR, Left+ to RearL and FrontL, then both Right- and Left- just both go to GRND?

Any guidance would be enormously appreciated. It seems like it shouldn't be too complicated...I'm just not great with analog logic..or audio.

Sean

Document:.pdf

[lexis lexus]

you found the right connection diagram, congratulations.

the link to club lexus shows a much later model lexus w/ the cd player in the glove box

he's doing exactly what I did using the radio shack female jack. i placed mine in the little plastic plug in the console next to the e brake.

you have to tap into the radio to amp lines right front and left front, the jack will only accomodate two channels, the radio uses 4, so i just shift the input from my phone/mp3 player into those amp inputs cutting off the input from the radio. then all ya have to do is shift speakers to the front. it'll only work when the radio is turned on as this activates the amp, and the only volume adjustment is with your phone or player, but overall, it's a great fix for $5 w/ a few hours of time. if found the hardest part was soldering the wires to the little leads on the jack.

LL

[lebowski2]

Awesome, thanks for the reply. It seems obvious in retrospect, but it's nice to have someone confirm the obvious. I'm going to try and just put some wire taps on Front(R/L) and then pull all the grounds to the white SGRND line. I already soldered the jack and damn-near shorted the "bottom" leads. Why the heck are they so close together?

If this works, I'm going to put up a how-to on this site. It's not Earth-shattering..but I think it would be nice to have documented since it's not immediately obvious to the common noob how to translate from CDR+/CDR- to the RR RL FR FL wires.

Thanks again,

Sean