Product Description
Own a 1966 Mercury Comet and need the perfect radio? You've come to the right place!
The Custom Autosound USA-230 is a great addition to your Comet. It's an AM/FM radio with a rear aux input, and it fits perfectly in the original dash location. With 200 watts of power, you'll hear the radio clearly at plenty of volume, and it has electronic tuning and volume control.
Other great features include a 4-way fader, left/right balance and a 2-channel RCA aux input for an iPod or satellite radio tuner. There are 12 FM and 4 AM presets, 4-channel RCA pre-outs for an external amplifier, and bass and treble controls. A power antenna lead and a 1/8" pin cable are included, so no extra parts are needed to connect your music.
The USA-230 for the 1966 Mercury Comet is perfect if you don't need USB, MP3 or CD changer control.
Custom Autosound radios come with a 2-year warranty and are tested before they're boxed and shipped. If you ever have an issue, their customer service line will help get it fixed quickly. It's a great radio with all the features you need.
This radio features:
● AM/FM stereo
● 200 Watts (4x50)
● Auxiliary Input (RCA Rear) RCA to 1/8" pin jack included
● Digital Clock
● Electronic Tuner
● 16 presets (12 FM, 4 AM)
● 4 Channel RCA Pre-outs
● 4-way fader
● Power Antenna Lead
Available with a black or chrome face
Frequently Asked Questions About the 1966 Mercury Comet USA-230 In Dash AM/FM
Is this radio made specifically for the 1966 Mercury Comet?
This listing is the version made for the 1966 Mercury Comet, designed to go into the original dash opening. Custom Autosound says its radios fit without altering or cutting the original dash.
My 1966 Mercury Comet is 6-volt or positive ground. Can I still use this?
The order form has Voltage (6 and 12) and Ground (Negative and Positive) options, so set them to match your 1966 Mercury Comet.
How does the USA-230 handle phone audio and connections?
It has a digital clock, a 4-way fader and a power antenna lead. It's rated at 200 watts (4x50) and has 4-channel RCA pre-outs, so you can add an outboard amplifier later.
What features does the USA-230 have?
The electronic tuner stores 16 presets, 12 FM and 4 AM. It skips the USB port, iPod dock and CD changer control found on the USA-630, but keeps the same look.
What can the USA-230 do?
There's a rear RCA auxiliary input, and Custom Autosound includes an RCA to 1/8" pin jack cable for phones, MP3 players or satellite tuners.
Why does the order ask about factory air?
Select Yes or No under Factory Air so we send the correct setup for your 1966 Mercury Comet's dash.
USA-230 specifications
- 200 watts peak power (50W x 4)
- AM/FM stereo tuner
- RCA auxiliary input
- 12 FM and 4 AM presets
- Electronic tuning and volume
- 4-channel RCA pre-outs for an external amplifier
- Separate bass and treble controls
- 4-way fader and left/right balance
- Power antenna lead
- Designed for original classic dash openings (no DIN cut required for vehicle-specific faceplates)
- Custom Autosound 2-year manufacturer warranty
USA-230 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-230 extras
Use the rear RCA AUX for a wired player. Pre-outs support adding an amplifier later without replacing the radio.
Suggested order for a 1966 Comet
- 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 Comet
- This radio is sold for the factory Comet opening used in 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-230 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 Comet USA-230
Will this fit my 1966 Comet without cutting the dash?
It is built for the original radio opening used on 1966 Comet 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-230 is a wired/AUX-focused radio without built-in Bluetooth. Consider a USA-740 or USA-850 if you want Bluetooth built in.
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.
