Head unit help, wiring the head unit Options

[bdweber3]

if there is anyone out there that knows of a site that has the factory map of the wiring diagram for the head unit. or if anyone knows the wiring cominations of the head unit connector. i was popping in a new head unit the other day and was blocked by the connector pins not meshing. ive done this process before but with a paseo numerous times but now im on a celica. i am going from a toyota to a sony. if anyone could help it would be much help. thanks bryan

[Sinyk]

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.