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this approach only uses two speaker channels and will use the stock amp to power the front, back and "aktiv bass" door speakers. it will use the existing fader in the shifter console. i kinda like the fader there since i don't have to fiddle with the head unit to adjust it.
it's not really that complicated once you figure out what the amp
in the back is all about. the amp is on the passenger side in the trunk right underneath the trunk hinge. it is really just a speaker level "booster" with specific bass enhanced outputs. the amp is the black finned box with a big wire harness plugged in on top. right beneath it is the rear tuner unit. you just need to send the following connections to the back:
- 2 pairs speaker wire - on the tuner in the back disconnect the black and white plugs which are the amp inputs. this is where you will connect your speaker out.
- amp turn-on - this is a spade tip connector on the rear tuner unit between the power and the black and white plugs (see note below on turn-ons).
- antenna extension - the existing cable is routed from the antenna behind the tailight assembly to the right side since it plugs into the rear tuner unit. i am not sure if it will reach all the way to the front - you may need this extension.
at the head unit be aware that the antenna turn-on is a separate circuit and is in front. you will find a spade tip connector on a blue wire that is sheathed in black plugged in back of the 1432. on the new head unit, if you don't have separate turn-ons for amp and power antenna, wire this in parallel to the amp turn-on you are sending to the back. you will also need the ground spade connector that was plugged into the old head unit for the power antenna circuit, you can just wire this in parallel with the new head unit's ground.
here's a worthwhile trick - the din cable that connected the head unit to the tuner will no longer be needed so you can use it for the speaker and amp turn-ons. i think you can buy these din connector heads at RS because i did some years ago. they each come with 4 pre-wired, color coded rca plugs which you can either use or snip off. this is a little more involved and you will have to check that the signals come out ok at the other end. if you do this you will only need to route the antenna cable which is a lot easier by itself than with the speaker and turn-on wires added.
everything else is as previously described regarding R&R of the old 1432 head unit.
John, you can just reference this in your page...
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