Club Lexus Forums - View Single Post - How To: Build and Hardwire an Auxillary Input to OEM Stereo

lex bubble · 04-24-07, 07:14 PM

First off, BIG thanks to Pure Drifter for the write up. I've been waiting for a solution like this for a while. I took stab at the install this weekend and ran into a couple of issues (due in part to my lack of patience for the remaining instructions on the install). Here are the details of my situation:

I have a '94 ES300 with a bone-stock factory Pioneer system with the 6-disc changer in the trunk. I gathered the parts together, started with the install, and realized that my factory amp has different connectors than the one's pictured in the write up (no real surprise here). I Google'd for the amp harness diagram to no avail. So, determined to continue...I tried to figure out which wires were the right ones to use. I found some that work, but I don't think I found the right ones. Here's where I'm at.

First issue: The ipod will play through all of the speakers in the stereo. However, the volume is either on or off...no in between. Regardless of whether or not I adjust the volume on the ipod. If I turn the volume knob on the stereo to anything more than around 20%, the music playing through the ipod is heard (at a constant volume that doesn't increase as the knob is turned). Less than 20 % it's dead silent. Also, the left to right and front to rear adjustment knobs no longer make changes as I turn them.

Second Issue: I bought the ipod harness pictured a few pages ago. But I bought the one with the power/ground wire so I can charge it while it plays in the car. My ipod battery won't hold a charge at all, and needs a power source to be played for more than 2 minutes. I found a 12v switched source on the amp's harness and wired the red power wire on the ipod adapter harness, and the ipod see's an input of power...but it will not charge the ipod. (I know the issue is not with the ipod, because I can use the USB, wall, and cigarette lighter plugs to charge it)

Third issue: My stereo, cassette, cd changer no longer generate any sound when they're chosen as the source.

I obviously took a wrong turn somewhere. My amp has 2 plugs on it (and not 3). If anyone can post up the '94 ES300 factory amp pinout and any other useful info, I'd greatly appreciate it.

04-24-07, 07:14 PM	#50
lex bubble Driver School Candidate Trader Score: (0) Join Date: Apr 2007 Location: TX Posts: 2	Need a lil help... First off, BIG thanks to Pure Drifter for the write up. I've been waiting for a solution like this for a while. I took stab at the install this weekend and ran into a couple of issues (due in part to my lack of patience for the remaining instructions on the install). Here are the details of my situation: I have a '94 ES300 with a bone-stock factory Pioneer system with the 6-disc changer in the trunk. I gathered the parts together, started with the install, and realized that my factory amp has different connectors than the one's pictured in the write up (no real surprise here). I Google'd for the amp harness diagram to no avail. So, determined to continue...I tried to figure out which wires were the right ones to use. I found some that work, but I don't think I found the right ones. Here's where I'm at. First issue: The ipod will play through all of the speakers in the stereo. However, the volume is either on or off...no in between. Regardless of whether or not I adjust the volume on the ipod. If I turn the volume knob on the stereo to anything more than around 20%, the music playing through the ipod is heard (at a constant volume that doesn't increase as the knob is turned). Less than 20 % it's dead silent. Also, the left to right and front to rear adjustment knobs no longer make changes as I turn them. Second Issue: I bought the ipod harness pictured a few pages ago. But I bought the one with the power/ground wire so I can charge it while it plays in the car. My ipod battery won't hold a charge at all, and needs a power source to be played for more than 2 minutes. I found a 12v switched source on the amp's harness and wired the red power wire on the ipod adapter harness, and the ipod see's an input of power...but it will not charge the ipod. (I know the issue is not with the ipod, because I can use the USB, wall, and cigarette lighter plugs to charge it) Third issue: My stereo, cassette, cd changer no longer generate any sound when they're chosen as the source. I obviously took a wrong turn somewhere. My amp has 2 plugs on it (and not 3). If anyone can post up the '94 ES300 factory amp pinout and any other useful info, I'd greatly appreciate it.