Product Description
Custom Autosound 1965-66 Cadillac USA-740 In Dash AM/FM
The Custom Autosound USA-740 is an ideal upgrade for 1965-66 Cadillac owners looking to enhance their vehicle's audio system with modern features while preserving its classic appearance. This high-quality radio unit is designed to integrate seamlessly into the dashboard of these vintage models, providing contemporary functionalities without compromising the car's original charm.
One of the most notable features of the USA-740 is its Bluetooth connectivity. This allows drivers to make hands-free phone calls and stream music wirelessly from their smartphones, providing a safe and convenient way to stay connected while on the road. Whether you're listening to your favorite playlists, podcasts, or audiobooks, the USA-740's Bluetooth capability ensures a seamless audio experience.
In addition to Bluetooth, the USA-740 is equipped with a USB port for playing MP3 and WMA files, as well as an auxiliary input for connecting external audio devices. This versatility allows users to enjoy music from various sources, including USB flash drives and portable media players, making it easy to access a wide range of audio content.
The USA-740 delivers impressive sound quality, boasting a 300-watt peak power output. It features four-channel RCA pre-outs, which allow for the connection of external amplifiers to further enhance the audio experience. Users can also customize the sound with adjustable bass, treble, fader, and balance controls, ensuring a personalized listening experience.
Designed to complement the interior of the 1965-66 Cadillac, the USA-740 features period-correct push buttons and knobs that maintain the vehicle's authentic look. This careful attention to detail ensures that the radio unit blends seamlessly with the car's dashboard, preserving its vintage aesthetic. Installation is straightforward and requires no modifications to the original dashboard, maintaining the vehicle's historical integrity.
The USA-740 also includes an AM/FM tuner with 30 presets (18 FM and 12 AM), providing access to a wide variety of radio stations. The digital clock and LCD display add to the unit's practicality, making it a convenient addition to any classic Cadillac.
In conclusion, the Custom Autosound USA-740 is a perfect choice for 1965-66 Cadillac owners who wish to modernize their car's audio system while retaining its classic style. With Bluetooth connectivity, multiple audio inputs, excellent sound quality, and a design that respects the vehicle's original aesthetics, the USA-740 enhances the driving experience by combining modern technology with vintage elegance.
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
1965-66 Cadillac USA-740 In Dash AM/FM: Your Questions Answered
Is this radio made specifically for the 1965-66 Cadillac?
This listing is the version made for the 1965-66 Cadillac, designed to go into the original dash opening. Custom Autosound says its radios fit without altering or cutting the original dash.
What can the USA-740 do?
Custom Autosound rates it at 300 watts peak, and it adds hi-volt 4-channel RCA pre-outs plus a subwoofer line-out. The USB port plays MP3, WMA, FLAC and WAV files from a flash drive.
How does the USA-740 handle phone audio and connections?
There are two auxiliary inputs, a front mini jack and a rear RCA. The AM/FM RDS tuner holds 25 presets (15 FM, 10 AM) and can auto-store the strongest stations.
Is there a CD or Bluetooth upgrade?
Check the CD options on this page, which include Single Slave CD.
Which add-ons are offered with this radio?
You can add a front dual voice coil speaker, a rear 6x9 speaker pair (Custom Autosound 6x9 Speaker Pair and Upgraded Pioneer Speaker Pair), and an antenna (Hideaway Antenna and Power Antenna) right from the options above.
What if my 1965-66 Cadillac has air conditioning?
Select Yes or No under Factory Air so we send the correct setup for your 1965-66 Cadillac's dash.
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 1965-1966 Cadillac
- 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 1965-1966 Cadillac
- This radio is sold for the factory Cadillac opening used in 1965-1966 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 — 1965-1966 Cadillac USA-740
Will this fit my 1965-1966 Cadillac without cutting the dash?
It is built for the original radio opening used on 1965-1966 Cadillac 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.
