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Professor Chaos Noble Donor
Location: Halifax, NS Gender: Male Total Likes: 8 likes
| | | | I'm never again doing audio on a cavalier < on 4/1/2007 7:58 AM > | Reply with Quote
| | | Ok, so one of my buddies calls me today. He bought a new head unit, 4 speakers and an amp. Because he knows jack shit about audio, he asked me to install it for him. Sounded simple enough, or so I thought. I’ve done way more complicated installs before and I’ve installed many HUs for friends, so I agreed. He has a 2002 Z24 Cavalier. Head unit was an Alpine CDA-9856. First off, I can officially say Cavaliers are the worst cars EVER to change a radio on. You need to completely remove the dash (top, front and bottom) just to get the stock radio out. WTF GM??? I was able to get my radio in my golf out in less than 10 seconds. At least the dash is was not that complicated to remove, except for the 5 screws in the glove box. So once we got that out of the way, we were able to gain access to the car’s wiring harness. The guy at the store sold us the wrong OEM harness, so I decided to simply chop it off. Again, no biggie, or so I thought. There were 13 wires in total. I grabbed my multi-meter and was able to correctly identify the 8 speaker wires by measuring the impedance on each line. 12V constant lead was also easy to identify by checking for voltage on the remaining wires. That leaves 4 wires remaining to be identified. 2 of them were identified as grounds (why 2???). That leaves 2 wires. We turn the key on ACC, hoping to find the ACC wire by checking for voltage. Both of them were at 0V. We were completely lost. No ACC line? That’s impossible… Checked the fuses, nothing. Humm… We also noticed that when the unknown purple wire was checked for voltage, ERROR would appear on the odometer. So we figured it must be for the alarm or something, but it still doesn’t make any sense that there is no accessory line. We ended up tying on the ON line, powering the blower and other stuff… We also had a very hard time getting the fucking HU to fit, as the opening was not very shallow, and the RCA wires would press against one of the blower ducts. We had to cut out parts of the dash, shave part of the RCA connectors, put 4 washers on each screw for the mounting brackets to allow for more spacing, etc. I NEVER EVER want to do an install on a Cavalier. Oh yeah, and the 12v outlet does not work anymore, and we have no fucking clue why. I'll have pics real soon.
| "Toyota vehicles are marketed to people who would be more excited about getting a new fridge than a new car I think." -Bandi |
| nostra-YOUPPI! Umpire
Location: Shahre:'on Kaybec Total Likes: 166 likes
Bonsoir et cest partie
| | | Re: I'm never again doing audio on a cavalier < Reply # 6 on 4/2/2007 12:48 AM > | Reply with Quote
| | | Posted by Professor Chaos Ok, so where the hell to connect the stock HU to in the trunk?
| sam is right the radio is involved with the ecm. also if the car has remote door locks the radio can hold up to 4 profiles so its attached to the remote locks. If you have the monsoon sound system there is a pre amp in the trunk too. Oh and dont forget the beeper that tells you the key is in the ignition, parking brake on or the seatbelt is un buckled is wired through the radio to the drivers door speaker. the hot in acc wire is yellow alarm module - orange with black line interior light system - grey - brown airbag wires: (only if car has steering wheel controls) lt grn yellow (to radio fuse dark green (only if car has scv) to power train module the following are only present in this function if no trunk preamp present grey + tan left front speaker brn + yellow left rear speaker dk green + lt green right front dk blue + lt blue right rear blk (ground duh) in this car NEVER ground the speaker system if you want the schematic ill email it to you tomorrow systems you woulndt expect to go through the radio that do? 1) interior lights 2) anti theft 3) airbags ( sort of an apendix from the old steering controls) 4) ecm connection
[last edit 4/2/2007 12:53 AM by nostra-YOUPPI! - edited 1 times]
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