Product Description
Custom Autosound USA-740 IN DASH AM/FM for Bonneville
We have come a long way from the first steam controlled vehicles, and the car stereos have followed suit. Cars were small because they had to be, since they didn't have much energy to force or support much weight. As for the car stereos, they have also undergone dramatic changes. A long time has passed by and since then and motors as well as stereos have gotten more powerful. The classic Bonneville along with the components in them have become more complex and sophisticated. At the point when Pontiac appeared, the Bonneville was nothing less than tons-o-fun. When you would stop in your neighborhood, it would dwarf the standing for every other car on the road. This powerful presences requires an equally impressive sound system.
Custom Autosound USA-740 Classic Car Radio With Bluetooth USA-740 Radio with Bluetooth Features:
- AM/FM Radio Bluetooth, USB & Auxiliary Inputs
- Option to Add CD-1, Single CD Player
- Bluetooth is Built Into the Radio
- Fits in your Original Dash Opening Without Cutting
- 3.5mm Aux Input on Front of Radio
- RCA Aux Input On Back
- Change Display Lettering Color
- Digital Tuner
- RDS Song/Artist Information
- 5 Channel RCA Pre-Outs w/ Subwoofer Control
- Separate Bass & Treble Control
- 5 EQ Presets
- Fader and Balance Control
- 15 FM & 10 AM Pre Sets
- Seek/Scan Function
- Back by a 2 Year Warranty from the Manufacturer
The sheer weight of the car made it ride like a gliding fantasy and bumps and blemishes in the road didn’t exist. Only the USA 740 reproduction of the car radios can allow your music to also coast on air. The Bonnevilles are extraordinary cruising vehicles that demand the proper sound system. Just as well built as the cars are, so is Custom Authosound’s USA 740 radios that are ready to install. The Bonnelilles were constructed like tanks and were built to last. Now envision yourself on said expressways and highways in your exemplary Bonneville blasting sounds from your powerful 740 radio. You actually don’t have to imagine it, you can order your own and have it delivered right to your doorstep. Sounds perfect right? If you thought you would have to limit your sounds in order to maintain the look you wanted Custom Autosound will change your life and the life of your Bonneville. Custom Autosound is a well-known secret that vintage collectors have kept to themselves for years. A USA 740 radio will make your Bonneville a total stud automobile. You can have the most recent and most noteworthy radios from the pioneers in great auto radio from Custom Autosound.
These are the highest point of the line radios, worked by the best in the business. You want to trust the sounds and look that will make your Bonneville the envy of collectors. So, do they sound astounding? Of course! They sound as well as they are staggeringly simple to install within the vehicle. Radios are the best affordable choice for your vintage or classic Bonneville. These USA 740 radios are completely loaded with features and provide the best sound, and each one is custom configured to fit your exact dash with no cutting or modifications. There is virtually no downside!
Common Questions About the USA-740 IN DASH AM/FM for Bonneville
Do I need to modify the Bonneville dash to install it?
This listing is the version made for the Bonneville, designed to go into the original dash opening. Custom Autosound says its radios fit without altering or cutting the original dash.
How does the USA-740 handle phone audio and connections?
There are two auxiliary inputs, a front mini jack and a rear RCA. You can pick from multiple LCD colors to match your gauges, with a dimmer, and it fully controls the optional CD-1 player.
Can I add a CD player or Bluetooth?
Yes. The options include Single Slave CD.
What else should I know about the USA-740?
Custom Autosound rates it at 300 watts peak, and it adds hi-volt 4-channel RCA pre-outs plus a subwoofer line-out. The AM/FM RDS tuner holds 25 presets (15 FM, 10 AM) and can auto-store the strongest stations.
Can I buy speakers and an antenna at the same time?
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), and a hideaway antenna.
What if my Bonneville has air conditioning?
The Factory Air option tells us which dash layout your Bonneville has, so pick Yes if it has factory A/C.
USA-740 specifications
- Bluetooth built in (streaming and hands-free calling)
- 300 watts peak power (45W x 4 RMS, 2-ohm stable)
- AM/FM stereo tuner
- 2 AUX inputs (3.5 mm front and RCA rear)
- USB port
- Direct control for optional CD-1
- 5-channel RCA pre-outs including subwoofer pre-out and control
- 15 FM and 10 AM presets
- 7-color LCD with dimmer; RDS station/song/artist display
- DSP EQ; auto-store presets
- Electronic tuning and volume; separate bass/treble; 4-way fader; L/R balance
- Power antenna lead; digital clock
- USA/EUR/JAP/RUS tuner capability (USA default)
- Custom Autosound 2-year manufacturer warranty
USA-740 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-740 extras
Expect antenna, USB, microphone (Bluetooth), CD-1, and subwoofer RCA connections in addition to front/rear line outs. Use the front 3.5 mm AUX or rear RCA AUX for wired sources.
Suggested order for a classic Bonneville
- 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 Bonneville
- This radio is sold for the factory Bonneville 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-740 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 Bonneville USA-740
Will this fit my classic Bonneville without cutting the dash?
It is built for the original radio opening used on classic Bonneville models. Compare your dash opening and bezel to the product photos. We do not modify dashes in-house.
Does this radio have Bluetooth?
Yes—Bluetooth is built into the USA-740 for streaming and hands-free calling.
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.
