1970: This model year's radios saw few visual changes from the previous year. There were however, many electronic changes. Thanks to advancements in technology, FM stereo equipment no longer required separate multiplex equipment--it was the first year for the one-piece stereo radio. This was also the first Chevelle year where all radios had their dial lights tied to the dash lights circuit via an extra harness connector (this meant dials only illuminate when the dash lights are on). The MISTAKES page contains helpful identification clues for 1970 equipment.
The AM pushbutton radios found in '69-'72 Chevelles are nearly identical, however, there are some very important differences. 1970 model year radios have a green tint to the numbering on the dial, as well as a green "tint band" at the top of the lens like 1969 units. 1971-1972 units have white numbering and a blue "tint band" painted at the top of the lens. These colors reflect how the radio illuminates (blue or green) in the dark. This applies to all '70-'72 equipment.
The AM/FM radios (FM mono, not stereo) also look almost exactly the same as their 1969 counterparts. Look at the "tint band" (green for 1970) and the harness connector to tell if it is a 1969 or 1970 unit. 1970 units have the harness connector in the rear of the radio, not on the side and have the extra (5th) connector for the dial light on the plug like the AM units. This particular radio is shown with a "slip-on" fader control on behind the tuning knob.
The 1970 AM/FM-stereo radios were the first one-piece stereo units. They can be distinguished by the following features: green "tint bands" and green numbering/lettering, an amber colored stereo indicator lamp in the upper right corner of the lens, and the word Stereo printed on the actual FM dial band between the "104" and "108".
For 1970, another first was available, the one-piece combination AM radio and 8-track tape player. The AM/8's have a dial that doubles as the tape cartridge door. Above the dial and the word CHEVROLET are the pushbuttons. On the upper left corner of the lens is a round amber colored stereo indicator lamp. The second pushbutton preset also serves as an EJECT button for the tape. Green "tint bands" on the upper corners of the dial help distinguish this unit from other units.
Also premiering during the 1970 model year was the combination AM/FM-stereo radio and 8-track tape player. This "high-tech" unit can receive both AM as well as FM-stereo broadcasts and play 8-track tape cartridges. Like the AM/8's, the dial (with the extra FM band) doubles as the tape door and CHEVROLET is printed below the buttons. Three of the pusbutton presets serve double-duty as AM, FM and EJECT buttons. Just like the AM/8's, there is an amber colored stereo indicator on the upper left side of the lens, but in addition there is also an amber colored FM indicator on the upper right side of the lens. Green "tint bands" on the upper corners of the dial help distinguish this unit from other units.