Product Description
When you have a powerful classic car, you want a radio that plays great music without overwhelming the experience as you drive your friends around in your classic Oldsmobile Cutlass. The USA-630 blends its power and features with your car's, so you have a complete package that impresses your friends every time they ride with you. Your classic Cutlass will have an excellent traveling partner. Call us at 574-226-6676 to confirm fit for your year.
The Benefits of the USA-630
You know how much power your classic Cutlass has, and now you need a radio to match. The USA-630 has 300 watts peak, so your music isn't drowned out by engine noise. You also get plenty of music options: CDs through an optional changer, MP3 and WMA files, and AM and FM radio. A power antenna lead helps bring in your 16 presets (12 FM, 4 AM) nice and clear. Treble, bass and volume controls plus the digital EQ let you hear every note, and the USA/Euro tuner helps you find other stations when you want a different kind of music.
With all its features, the USA-630 stands out in your classic Cutlass.
Go With the Best
When you want great music to match your great car, go with the best. Your passengers will hear top-quality sound from a top-quality radio. The Custom Autosound USA-630 is the radio for your classic Oldsmobile Cutlass. A first-class car deserves a first-class radio.
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USA-630 for a Cutlass In Dash AM/FM: Your Questions Answered
Will it fit my Cutlass without cutting the dash?
This listing is the version made for the Cutlass, designed to go into the original dash opening. Custom Autosound says its radios fit without altering or cutting the original dash.
Does it look like the original radio?
The USA-630 for a Cutlass In Dash AM/FM is styled to look like the factory radio, so your dash keeps its period appearance.
Is there a CD or Bluetooth upgrade?
Check the CD options on this page, which include Single Slave CD and Bluetooth Adapter.
Will it work with a 6-volt system?
Choose your system under Voltage (12 volt and 6 volt) and Ground (Negative and Positive) when you order.
What can I add to my USA-630 for a Cutlass In Dash AM/FM order?
Add-ons offered here are 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 a hideaway antenna.
What features does the USA-630 have?
A USB port plays MP3 and WMA files from a flash drive, and the display shows artist and song titles. It also has digital EQ, separate bass and treble, loudness, a 4-way fader and a 2-channel RCA auxiliary input with cable included.
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 classic Cutlass
- 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 classic Cutlass
- This radio is sold for the factory Cutlass opening used in classic 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 — classic Cutlass USA-630
Will this fit my classic Cutlass without cutting the dash?
It is built for the original radio opening used on classic Cutlass 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.
