Product Description
The Custom Autosound USA-850 brings a working analog dial look and modern features to a classic Chevy truck. This listing is the Chevy truck version, made to fit the original dash opening; Custom Autosound says its radios fit without altering or cutting the dash.
Specifications
- 4 programmable screen options (DigaDial)
- Working analog dial
- Custom fit in dash
- Bluetooth for streaming and hands-free calls
- 75 watts x 4 peak (300 watts max)
- PLL tuner
- 6-volt RCA pre-outs and dual subwoofer pre-outs
- DSP EQ (Flat, Classic, Pop, Rock), subwoofer control, bass, treble and mid
- Fader, balance and loudness on/off
- CD controller for the optional CD-1 single CD player
- Rear RCA auxiliary input
- USB port
- 12 VDC negative ground; speaker impedance 2-8 ohms
- Simple 3-wire power harness
Ordering Options
The order form asks for Year, Make and Model, Factory Air, Voltage and Ground so we can send the right setup for your truck. You can also add:
- CD Player: add a CD player that works with the radio
- Front dual voice coil speaker, which plays both stereo channels through a single dash speaker
- Rear 6x9 speaker pair, Custom Autosound or upgraded Pioneer
- Antenna: hideaway antenna or power antenna
Built for Amplifiers
With 6-volt pre-outs and dual subwoofer outputs, the USA-850 is ready for external amplifiers and subs. Truck cabs are noisy, so many owners add a small amplifier and a compact subwoofer behind the seat.
Electrical Requirements
The USA-850 needs 12-volt negative ground. Older trucks may be 6-volt or positive ground; Custom Autosound makes the NGVB-HC voltage booster for 6-volt negative ground and the PGPI-HC power inverter for positive ground.
Installation
The 3-wire power harness and labeled speaker harness make installation straightforward. Check the truck's wiring, add a fuse to the power lead and test before reassembling the dash.
Warranty
Custom Autosound radios sold by Vintage Car Radio carry a 2-year warranty.
Why the USA-850
Compared with simpler Custom Autosound models, the USA-850 adds four screen options, a midrange control, DSP EQ, Bluetooth calling and dual subwoofer outputs. If you want the most complete system behind a classic face, it is a strong choice for a Chevy truck.
Speakers and Antenna
Many classic Chevy trucks have one dash speaker. The optional front dual voice coil speaker gives stereo from that location, and a rear 6x9 pair, Custom Autosound or upgraded Pioneer, adds more sound where space allows. A hideaway or power antenna is also offered.
Getting the Best Sound
Start with fresh speakers and good wiring, then use the DSP EQ presets as a starting point and fine-tune with the bass, mid and treble controls. Trucks with open floors or worn weatherstripping often benefit from a little extra bass and some sound deadening.
Custom Autosound USA-850 for Chevy Truck FAQ
Will it fit my Chevy truck?
This is the Chevy truck version. Contact us with your year to confirm fit.
Does it have Bluetooth?
Yes, for streaming and calls.
How much power does it have?
75 watts x 4 peak, 300 watts max.
Can I add a CD player?
Yes. A single slave CD player is offered.
What is the warranty?
2 years from Custom Autosound.
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 classic Chevy Truck
- 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 Chevy Truck
- This radio is sold for the factory Chevy Truck 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-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 — classic Chevy Truck USA-850
Will this fit my classic Chevy Truck without cutting the dash?
It is built for the original radio opening used on classic Chevy Truck 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.
