Audio Questions

Looking at hooking up the 12" kicker comp + kenwood amp + Alpine CDA9338 to my 2003 Jeep Grand Cherokee. I know to get the head unit to work I will need the harness from Best Buy.

My question was, the grand cherokee I have has a Factory Amp installed. I was told I need to bypass that factory amp for everything to work. How exactly, if I bypass the factory amp, can I get the stock speakers to work? I really want to make this as simple as possible. If it was a silverado this would be no problem. I am just having trouble understanding how I am going to run the speakers without the factory amp withOUT having to buy another small amp to run the speakers..

Any ideas?

On the wifey's I was able to wire the eclipse in with the regular harness, but it was way loud and it started whining out of the left rear so I bypassed it at the amp harnesses. I would use the infinity system harness, it uses the low level output from the RCAs. Shouldn't give you the problems I had with mine.

So if I use the harness going from the stock amp. Where do I put it on the new setup? Do I have to cut the harness and somehow splice it onto the kenwood amp I have?

I was assuming the kenwood was for the sub. If it is for mids and highs you will need to find which wire goes where from the output of the factory infinity amp. I don't remember which wire is which but the output harness is the one with the most wires. The fronts should have a crossover installed for the tweeters since the factory amp has one built in. You can use a AA or AAA battery to safely test your speakers without doing any harm. After all wires are found and hooked up, test your phasing by fading to front and moving your head evenly in between both speakers(basically just lean over the console a bit); if the speakers are in phase you will hear good bass response out of the speakers. If they are out of phase the. The bass response will be a little muddy and almost non-existant. I they are out of phase switch the positive and negative of one of the speaker leads, it does not matter which one. Repeat for the rear.

The headunit should go right in using the factory radio harness without issue if you use the Chrysler harness with the RCA inputs for the speakers. This harness will feed the factory amp with the low level input signal it needs to operate like it does from the factory

If the kenwood amp is for the sub then you should run it off of the sub pre-out from the alpine. It won't need anything from the factory amp unless you were adding subs using the factory radio, then you would need to use a test speaker to find the rear woofer wires that are already crossovered at 80hz. Let me know if I missed anything or if you need further help.

god I hate wiring

It's not that bad. :)

I can wire up systems. :badteef: If you need some help, let me know!

start off with just hooking the cd player up with the wiring harness that best buy can get you. you might also need a dash kit for the jeep to... The reason i am saying that is because most wiring harnesses these days are compatable to run the stock speakers with out any wiring off of the factory amp.. I had a buddy that i helped put a cd player in his gto and it was a factory amp car and he didnt have to make any adjustments with the amp wiring. and when you get the cd player hooked up see if your stock speakers still work correctly. if they do all you will need to do is run your rca wires and remote wire from your cd player and get you a power cable ran. if you hook it up and they dont work i dont know what to tell you I was just looking for the easiest way out..

I think I will try that first, let the amp from the back of the alpine power those speakers

make sure it's the wiring harness with the rca ends. Those factory infinity systems do not like high level input.