Originally Posted by Bbasso

I wonder...
If the plug for the back of the radio dictates which sound system came from the factory?

When I bought my XJ there was a sony head unit tapped into the stock wiring with the OE plug intact.

I recently bought a stock Infinity Head unit from the junk yard and it plugged in and worked instantly. Also bought the Infinity tweeters from a junk yard, plugged them in and worked... But I haven't noticed an amp or wiring for it any near my back seat.

If there is an amp, the wires from the radio would have to go to the amp then to the speakers- correct?
So it would have to have two sets of plugs?
One for direct output to the speakers and another that sent the signal to the amp AND then in the doors... would also have to have two sets of plugs, one directly from the radio and another with the amplified power from the amp.

I'm making sense???

Originally Posted by jomps

hey i got the harness for it and can post up pics once i can grab it from storage

Originally Posted by Northwoods Snowman

Not completely. Picture it this way... The standard sound systems has the speakers wires going directly from the radio to the speakers. The amplified version is the exact same, but in amp is spliced into the middle of the speaker wires. The amp has speaker wire inputs, and outputs. In order to "splice" the amp into the wires, a different wire harness is used to run the wires back under the rear seat, and then back up under the dash.

Originally Posted by Bbasso

so you're saying that the wires should run to the location of the amp regardless?