6G Celicas Forums

best to use the power cables and harness, but forget the speakers. run the RCA's to your amp and connect the speakers dirct to the amp with good quality speaker wire. It will sound 100 X better than the current setup.

im kinda lost on the way you worded that entry could you elboate on it. does ur car have the tweeters? do they work? and does that amp power the tweeters?

Yes, Tweeters are connected to the door speakers but I use a small passive Xover. This is connected direct to the amp. Amp to h/unit via rca. crisp clear sound and no need to mess with the looms!!!

So I finally got around to playing with my deck and I ran into some problems.

I picked up an amplifier integration harness, like many people have talked about in this thread, and I plugged it into the wire coming to the stock deck, wired it up to my Eclipse deck and..... nothing. No power.

So I then went and hooked up the stock deck back to the connector, and more nothing.

I ran a straight wire off of the battery to the stereo and I was able to get my Eclipse head unit to power up, but not using the harness.

After going through every fuse and testing the voltages coming into and out of the various connectors, I have concluded that I am losing power going through the amp. I think hooking up my deck with that harness somehow fried the stock amp and now I have no choice but to bypass the amp and use the blue connectors underneath.

I'm rather pissed off that this happened because the amp integration harness is such a quick install compared to this crap...

And odds are not all 6 front speakers will work anymore so I have to either rewire them in series, or go and get another amp, which is not what I had in mind.


Does anyone know if the stock amp handles crossovers to the tweeter and such or is there a voltage blocker inline for the tweeter? I'd hate to hook up everything and blow it.

whoa... this got me all worried now.. i will be installing my deck next week with the metra amplifer integration harness..
i don't really understand how the amp would've blown or burned since the power is coming from there. perhaps the wires of the harness must've touched and shorted itself after it was plugged in.
just out of curiosity, did you plug the integration harness in first, then wire the wires to the deck? or did you do it the other way around?

With the Eclipse head unit harness unplugged from the head unit, i wired up the amp integration harness to the eclipse harness. Once complete i plugged the amp integration harness into the wire that connects tot he factory amp. Then I plugged it into my eclipse deck.


Considering it's late, and I was rather annoyed about the whole thing, I'm going to start on it tomorrow morning and see what I can come up with. Odds are I will bypass the amp to see what works considering right now it appears that my amp is done for.

So, until tomorrow, I won't really know.

Well it's all done.

I ended up bypassing the amp and removing it completely. It turns out that in a car with the premium stereo, there are 3 wire harnesses, not just 2.

There were the 2 blue harnesses (one for the head unit and front speakers, and one for the rear speakers) as well as another white 4-pin harness with a "P" marked on it (I assumed for Premium).

After connecting the wire harness I bought to the two blue plugs, I had the head unit, rear speakers, front tweeter and front 4" speakers all working (The 4-pin plug is for the 8's up front from what I found)

I ended up using the pins from the integration harness I bought to connect the 8's from the white harness with the front speaker wires connected to the blue harness. I connected the 8's in series so as not to blow anything and the system sounds great!

The extra power from the Eclipse deck made a noticeable difference throughout the system.

I think the hardest part of the whole install was removing the amp and the bracket.

NOT bad .. i just put a 7" pop out LCD but for some reason the screen was catching on the dash panel, so i just switch my extra change hold to the top , so that is stuck close for now , untill i figure it out..

could you please post pics of the amp and extra harness? i want to know if there's any way i can use my metra harness and use the stock amplifiers with the 8 speakers..