Product Description
Custom Autosound USA-850 for a 1966-67 El Camino
Upgrade Your 1966-67 Chevy El Camino with the Custom Autosound USA-850
The 1966-67 Chevy El Camino is a true classic, blending muscle car performance with the practicality of a pickup. Whether you use it as a showpiece or a weekend cruiser, adding a modern sound system that maintains its vintage aesthetic is the perfect way to enhance your driving experience. The Custom Autosound USA-850 is the ultimate solution, delivering modern technology without compromising your El Camino’s original dash design.
Designed specifically for classic vehicles, the USA-850 offers AM/FM digital tuning, Bluetooth connectivity, USB, and AUX inputs, giving you multiple ways to enjoy your favorite music, podcasts, and hands-free calls. The classic-looking display and push-button controls maintain the factory-style appearance, ensuring your dashboard retains its nostalgic charm.
With 300 watts of power, the USA-850 provides rich, high-quality sound that can be enjoyed through your existing speakers or a new custom setup. If you want to take your sound system to the next level, the radio features built-in RCA pre-outs, allowing you to connect external amplifiers and subwoofers for enhanced performance.
One of the best features of the USA-850 is its easy installation. It’s designed to fit directly into your 1966-67 El Camino’s dash without the need for cutting or modifications. That means you get all the perks of modern audio while keeping the original look of your interior intact.
For El Camino enthusiasts who appreciate both style and function, the Custom Autosound USA-850 is the perfect upgrade. Available now at Vintage Car Radio, this premium radio ensures you can cruise in style while enjoying your favorite tunes with crystal-clear sound!
Specifications:
• 4 programmable screen options
• Working analog dial
• Custom Fit In Dash
• 6-volt RCA Pre-Outs and dual subwoofer pre-outs
• DSP EQ
• Subwoofer control
• Bass, treble, mid
• Fader/balance
• Loudness on/off
• CD Controller
• RCA AUX in
• Bluetooth
• 75W X 4 Peak (300W max)
• PLL Tuner
• Power Supply 12 VDC negative ground
• Speaker impedance 2-8
• 4 lbs shipped
• Shipping box 12 X 11 X 5
• Fits all CAS current applications (400+)
USA-850 for a 1966-67 El Camino: Frequently Asked Questions
Will it fit my 1966-67 El Camino without cutting the dash?
This version is built for the 1966-67 El Camino and is made to fit the factory radio opening. Custom Autosound says its radios fit without altering or cutting the original dash.
How does the USA-850 handle phone audio and connections?
It has a rear RCA input and controls the optional CD-1 single CD player, and installation uses a simple 3-wire power harness. Custom Autosound rates it at 75 watts x 4 peak (300 watts max), with 6-volt RCA pre-outs and dual subwoofer pre-outs.
Can I add a CD player or Bluetooth?
Yes. The options include Single Slave CD.
What do I get with the USA-850 in my 1966-67 El Camino?
You can adjust bass, treble and midrange or choose a DSP EQ preset (Flat, Classic, Pop or Rock). The DigaDial display gives you 4 screen choices, including a classic analog dial with a red needle that glides across the stations, or an all-digital RDS display.
What if my 1966-67 El Camino has air conditioning?
The Factory Air option tells us which dash layout your 1966-67 El Camino has, so pick Yes if it has factory A/C.
What about older positive-ground electrical systems?
Choose your system under Voltage (12 Volt and 6 Volt) and Ground (Negative and Positive) when you order.
USA-850 specifications
- DigaDial selectable display (including working analog-style dial and digital RDS views)
- Bluetooth built in (streaming and hands-free calling)
- 300 watts peak power (75W x 4 peak)
- AM/FM stereo tuner with RDS
- 25 presets
- USB port for MP3/WMA/FLAC/WAV playback and phone charging
- Rear RCA auxiliary input
- Direct control for optional CD-1
- 6-volt RCA pre-outs plus dual subwoofer pre-outs
- Bass, midrange, and treble; DSP EQ (Flat, Classic, Pop, Rock)
- Front/rear fader and left/right balance; loudness
- Power antenna lead; digital clock
- 12V negative-ground; 2–8 ohm speakers
- Designed for original classic dash openings (vehicle-specific faceplate)
- Custom Autosound 2-year manufacturer warranty
USA-850 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-850 extras
Expect antenna, USB (playback and phone charge), Bluetooth microphone, optional CD-1 control, 6V front/rear RCA pre-outs, and dual subwoofer pre-outs. Use the rear RCA AUX for a wired player. Pick your DigaDial display style in the radio menu after power-up.
Suggested order for a 1966-1967 El Camino
- 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 1966-1967 El Camino
- This radio is sold for the factory El Camino opening used in 1966-1967 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-850 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 — 1966-1967 El Camino USA-850
Will this fit my 1966-1967 El Camino without cutting the dash?
It is built for the original radio opening used on 1966-1967 El Camino 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-850 for streaming and hands-free calling. The DigaDial display also offers selectable classic dial and digital views.
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.
