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Old 11-01-2009, 09:04 PM   #1
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Installing New Headunit with Factory Sub?

Saw the write up on installing a new headunit and had a couple questions since it made no mention of the factory sub in the console...

Where does the amp get it's signal? Will I have to splice into the wiring for that somewhere or is it spliced into the factory wiring (thus requiring me not to touch it unless I wanted to REMOVE it)?

Also, which wire will I need to hook up to power the amp up when I turn it on? Remote turn on wire or power antenna wire? I'm thinking I have both on the harness (haven't looked yet)?

Oh yeah, and the Walmart I went to for the wire adapters didn't have any antenna adapters...will I need one to switch the antenna over from my factory headunit to my Pioneer headunit? I'd figure they'd all be standard...but it was mentioned in the other thread that I would need one?

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Old 11-01-2009, 09:43 PM   #2
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antenna is standard. Only concern would be the cable being long enough.

long as the head unit has a connection for "powered sub" or "power antenna" (blue or blue and white wire) then you'll be good.

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Old 11-01-2009, 11:14 PM   #3
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Thanks! Hopefully I'll get my headunit swapped out within the next day or two...factory CD player won't play my burned CDs and I'm getting sick of listening to the radio, especially when it seems like every good station has their commercial breaks at the exact same time. lol
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Old 11-01-2009, 11:31 PM   #4
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Yeah, my aftermarket head unit works fine with the factory sub, I just wired it up to the Wiring Harness kit for the jeep, nothing special was needed.

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Old 11-03-2009, 12:03 AM   #5
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Got my headunit installed and just wanted to clarify what works and what doesn't...

When I wired it up, I wired remote turn on wire from the Pioneer harness to the remote turn on wire (blue w/ white stripe) on the factory connector from Walmart. When we plugged in the radio. No bass from the sub...the signal comes from a speaker line out adapter or whatever so you don't have to mess with that. So my problem was that the remote turn on wire off the headunit, was NOT turning the factory amp on for the sub.

After my friend screwed the wiring up twice (me catching it both times after the fact), here's how you need to do it:

You need to take the remote turn-on wire from your headunit's harness (or if you have a power antenna wire, you can probably use it too I'm guessing) which is blue w/ white stripe, and run it to the POWER ANTENNA wire on the harness (solid blue wire), NOT the remote turn-on wire. This will power the amp on properly so your sub will work.

With my Pioneer headunit, we also had to remove the security bolt bracket from the dash as the bolt was considerably larger than the screw that goes in the back of the headunit and for some reason it was blocking us from pushing the headunit all the way in (even though the depth was the same as the factory On top of that, the strap in there (attached to the headunit via the security bolt in the back which is a 3/8" bolt in my 2002, not a 10mm as I read in another how-to) MUST be attached to the grounding screw on the headunit as the headunit will not power up...even if your grounds in your wire harness are connected together.

Just some future info for anyone else doing this...might make things a little easier for ya. I thought the how to I read said there's only 2 screws holding the center dash bezel on...up top. But there's also a screw behind the ash tray that needs removed.

Then the headunit's bolted in with 2 3/8" hex head screws in the top right and bottom left corner, plus a 3/8" hex head screw on the back of the headunit.
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