Product Description
If you love listening to classic tunes while cruising in your vintage car, this radio is for you. The Custom Autosound USA-630 is made for 1954-56 Buick Century models and fits directly into the factory dash. It adds USB access for MP3 playback, an active digital clock and a retro-style display with white numbers and letters on a black background.
Picture yourself on a country road, flipping through 12 FM presets while the RDS tuner shows the artist, song and station on the LCD screen. You can also connect your iPod and enjoy your own favorites with the USA-630's separate bass and treble controls. The radio is styled for the 1950s look, so it suits your Century's dash perfectly.
The USA-630 is ideal for drivers who value history and simple, classic design. If you want a stylish, period-correct look with modern music on board, the USA-630 may be just what you're looking for.
The USA-630 has become one of the most popular vintage car radios around. It installs in your dash without any modifications, and its OEM-style push buttons fit the retro interior of your Buick. Use the buttons to browse songs and playlists on your iPod. With Custom Autosound's optional BluKit, you can also stream music over Bluetooth and take hands-free calls. Key features include:
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1954-56 Buick Century USA-630 In Dash AM/FM: Frequently Asked Questions
Will this fit my car?
Our vehicle search lists it for the 1954-1956 Buick, 1954-1956 Buick Century, and 1956 Buick Roadmaster. If yours isn't listed, contact us before ordering.
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), and a hideaway antenna.
What do I get with the USA-630 in my 1954-56 Buick Century?
A USB port plays MP3 and WMA files from a flash drive, and the display shows artist and song titles. The RDS tuner shows station, song and artist information, and you get 16 presets (12 FM, 4 AM).
Will it keep the stock look of my 1954-56 Buick Century dash?
The 1954-56 Buick Century USA-630 In Dash AM/FM is styled to look like the factory radio, so your dash keeps its period appearance.
What about older positive-ground electrical systems?
Choose your system under Voltage (6 and 12) and Ground (Positive and Negative) when you order.
What else should I know about the USA-630?
Bluetooth streaming and hands-free calling come from Custom Autosound's optional BluKit, which works with the USA-630. It can directly control Custom Autosound's optional CD-1 player.
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 1954-1956 Buick Century
- 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 1954-1956 Buick Century
- This radio is sold for the factory Buick Century opening used in 1954-1956 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 — 1954-1956 Buick Century USA-630
Will this fit my 1954-1956 Buick Century without cutting the dash?
It is built for the original radio opening used on 1954-1956 Buick Century 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.
