Product Description
Better Than the USA-230
Your classic Firebird is in for a treat. There's a radio even better than the USA-230 that fits your car: the USA-630. This top-of-the-line radio has more features, more power and even better sound.
When you want to light up your 1968 Firebird with top-quality audio, the USA-630 gets the job done.
What Makes It Better
First, 300 watts of power fills every corner of your Firebird with music. Next, a power antenna lead helps keep static and interference to a minimum.
The Custom Autosound USA-630 also plays CD (through a changer), iPod, WMA and MP3, in addition to the 16 presets (12 FM, 4 AM) on its RDS tuner, which displays song titles, artists and more.
Still not convinced? Add digital EQ, balance and volume controls, a 4-way fader, 2-channel RCA AUX inputs and 4-channel RCA pre-outs.
Don't forget the bass and treble controls and the digital clock. Everything is there to light up your 1968 Firebird with top-quality audio.
Hands Down the Best Radio Around
You can't beat the USA-630. It's at the top of its class, and its features prove it. When you want top audio in your Firebird, the Custom Autosound USA-630 is the radio for the job.
The USA-630 Features:
• AM/FM stereo
• RDS tuner shows station / song / artist on LCD display
• 300 Watts Peak
• USB Port for Flash Drive MP3/WMA Playback
• iPod dock and control (control your iPod from the buttons on the radio)
• Direct 6 CD Changer Control
• Negative LCD display (Black background with white letters / numbers)
• Alpha Numeric Display for MP3/WMA/ iPod files
• Electronic Tuning and Volume Control
• Loudness compensation
• Digital EQ
• 4-way fader
• Left Right Balance
• Digital Clock
• 2 Channel RCA Auxiliary Input for Satellite etc. (cable included)
• 16 Presets (12 FM, 4 AM)
• 4 Channel RCA Pre-outs
• Separate Bass and Treble
• USA/Euro Tuner
• Power Antenna Lead
1968 Firebird USA-630 In Dash AM/FM: Frequently Asked Questions
Will it fit my 1968 Firebird without cutting the dash?
This version is built for the 1968 Firebird and is made to fit the factory radio opening. Custom Autosound says its radios fit without altering or cutting the original dash.
What do I get with the USA-630 in my 1968 Firebird?
Bluetooth streaming and hands-free calling come from Custom Autosound's optional BluKit, which works with the USA-630. It also has digital EQ, separate bass and treble, loudness, a 4-way fader and a 2-channel RCA auxiliary input with cable included.
Does it matter if my 1968 Firebird has factory air?
Select Yes or No under Factory Air so we send the correct setup for your 1968 Firebird's dash.
What about older positive-ground electrical systems?
The order form has Voltage (12 volt and 6 volt) and Ground (Negative and Positive) options, so set them to match your 1968 Firebird.
What can the USA-630 do?
The RDS tuner shows station, song and artist information, and you get 16 presets (12 FM, 4 AM). Custom Autosound rates it at 300 watts peak (45 watts RMS x 4), with four RCA pre-outs for adding amplifiers.
Which add-ons are offered with this radio?
The options on this page let you add a front dual voice coil speaker, a rear 6x9 speaker pair (Custom Autosound 6x9 Speaker Pair and Upgraded Pioneer Speaker Pair), kick panels (W/Speakers, W/O Speakers, and Pioneer Upgrade), and an antenna (Hideaway Antenna and Power Antenna).
USA-630 specifications
- 300 watts peak power (45W x 4 RMS)
- AM/FM stereo tuner
- USB port for flash-drive playback (MP3/WMA/FLAC/WAV)
- Optional Bluetooth via BluKit add-on (sold separately)
- RCA auxiliary input (rear)
- Direct control for optional CD-1 changer
- 4-channel 5V RCA pre-outs
- Digital clock
- 7-color LCD display with dimmer
- Alphanumeric display for USB/iPod/RDS info
- Separate bass and treble; 4-way fader; L/R balance
- 25 presets (15 FM / 10 AM)
- Loudness compensation
- Power antenna lead
- USA/EURO/JAP/AUS/RUS tuner capability
- Custom Autosound 2-year manufacturer warranty
USA-630 wiring and tech tips
Use this as a head-unit reference for power, ground, antenna, speakers, and amplifier connections. Always match the printed diagram that ships with your unit if it differs.
Power and ground (typical Custom Autosound harness)
| Function | Wire color |
|---|---|
| Ignition / ACC +12V | Red |
| Battery / constant +12V | Yellow |
| Ground | Black |
| Power antenna | Blue |
Ignition and power-antenna leads are commonly fused at 1A on the harness—confirm against the guide that ships with your radio.
Speaker wiring (typical)
| Speaker | Wire color |
|---|---|
| Left front + / − | White / White-Black |
| Right front + / − | Gray / Gray-Black |
| Left rear + / − | Green / Green-Black |
| Right rear + / − | Violet (or Purple) / Violet-Black |
USA-630 extras
USB and iPod/dock leads share a cable near the antenna jack on many units. RCA jacks on top are typically labeled AUX IN, REAR, and FRONT (line out). Bluetooth requires the optional BluKit unless your package already includes it.
Suggested order for a 1968 Firebird
- Disconnect the vehicle battery before any wiring.
- Connect ground first, then constant (yellow) and ignition (red).
- Connect the antenna plug and the blue power-antenna lead if your car has a power antenna.
- Wire all four speakers, matching polarity.
- If using an amplifier, run RCA cables from the front/rear (and sub on USA-740/USA-850) pre-outs.
- Reconnect the battery and test radio, speakers, and charging system voltage.
Tech tips for 1968 Firebird
- This radio is sold for the factory Firebird opening used in 1968 models—do not cut a modern DIN rectangle if you want a stock look.
- A poor ground is the most common cause of whine or weak audio; scrape paint at the ground point and use a star washer.
- If AM reception is weak, check the antenna mast, cable continuity, and that the antenna plug is fully seated.
- Vintage Car Radio does not install radios. If you are not comfortable with 12V wiring, use a qualified installer.
USA-630 manuals
Download the manufacturer guide for operation, safety, and the official wiring diagram. You can also browse our full library on the Manuals page.
Vintage Car Radio does not offer installation. The manuals are for do-it-yourself reference or to share with your installer.
Two-Year Custom Autosound Warranty
All Custom Autosound radios sold by Vintage Car Radio are backed by a 2-year manufacturer warranty from Custom Autosound.
Radios are checked before shipping. If something is wrong out of the box or under warranty, call us at 844-802-4499 or 574-226-6676 and we will help coordinate with the manufacturer.
Vintage Car Radio does not offer installation services. Refer to the Manuals and Wiring / Tech Tips sections for manufacturer guidance, or use a qualified car-audio installer.
FAQ — 1968 Firebird USA-630
Will this fit my 1968 Firebird without cutting the dash?
It is built for the original radio opening used on 1968 Firebird models. Compare your dash opening and bezel to the product photos. We do not modify dashes in-house.
Does this radio have Bluetooth?
The USA-630 supports Bluetooth with the optional BluKit add-on (sold separately).
Do I need an amplifier?
Many owners run speakers directly from the radio. Pre-outs are there if you want more volume or a subwoofer later.
Do you install the radio?
No. Vintage Car Radio ships the unit and documentation; installation is DIY or by a shop you choose.
What is the warranty?
Custom Autosound radios include a 2-year manufacturer warranty. See the Warranty section for details.
Need help?
Call 844-802-4499 or 574-226-6676.
Specs
Wiring / Tech Tips
Manuals
Warranty
Two-Year Custom Autosound Warranty
All Custom Autosound radios sold by Vintage Car Radio are backed by a 2-year manufacturer warranty from Custom Autosound.
Radios are checked before shipping. If something is wrong out of the box or under warranty, call us at 844-802-4499 or 574-226-6676 and we will help coordinate with the manufacturer.
Vintage Car Radio does not offer installation services. Refer to the Manuals and Wiring / Tech Tips sections for manufacturer guidance, or use a qualified car-audio installer.
