INSTALLATION IN DASH
This radio will fit all Corvette models from 1963 thru 1967. The front of your new radio is a dimensionally exact copy of the original,
so it will install the same way that the original radio did. To remove to original radio, remove the passenger side trim panel from the
center dash console (A) (one phillips screw at the top). You may need to remove the black plastic heat distributor duct (B) two 5/16
screws. Remove the 7/16 radio support screw (C). Disconnect speaker, antenna and power connections (D). To remove speaker it is
easier if you remove the glove box and drivers side panel. Remove knobs and shaft nuts (E). A 9/16” spark plug socket is
recommended. Tilt radio top back and remove the radio through the side.
If you're also installing the Bluetooth® adapter kit, install the Aux extension cable per the instructions included in the adapter kit.
Use the reverse procedure to install the new radio. Be careful not to over tighten the shaft nuts. Finger tight plus ½ turn should be enough.
DIAGNOSTICS
No Sound:
Check for a good fuse with proper rating. When the radio is turned on, the orange wire should have 12 volts present. Radio
will mute when no station is received. Make sure antenna is plugged into the proper jack. If an option is plugged in, make sure it’s not on.
Before installation make sure the switch on the back of the radio is set for the correct speaker option and country.
Weak or No Reception:
Check continuity between the center pin of the antenna plug and the antenna mast. It should read 0 ohms (like a
short) Next, check continuity between the center pin of the antenna plug and the car body. It should not read (like an open circuit). If
you’re in a metal building, reception may be limited. Try it outside.
Ignition Noise:
Usually caused by an ungrounded antenna shield. The base of the antenna must make good contact with the car body.
This problem often shows up after a good paint job! Make sure the engine grounding straps are in place, clean and tightly bonded to the
frame.
Distortion:
Check to see if your speakers can handle at least 45 watts RMS. Small speakers that can only reproduce high frequency will
distort on bass notes. Make sure speakers are properly installed. Make sure that no speaker is grounded. Every speaker lead should
measure about 6 volts to ground with the radio on and volume low. Resistance in the DC power input wiring can cause the amplifiers to
“starve”. If distortion seems to increase with volume, measure the voltage on the orange wire. If the voltage drops when the volume is
raised, it is an indication of resistance between the battery and the radio – usually at the fuse block, but sometimes in the ignition switch.
If the backstrap is not bolted to a clean metal ground, try running a heavy ground wire from the ground lug on the radio directly to the
firewall.
Radio shuts off after a few minutes:
The radio has thermal protection built in to prevent damage from excessive heat. Possible causes
are shorted or grounded speaker wires. See if any unused wires can touch anything. Make sure the heater or defroster duct isn’t blowing
directly on the radio.
Dial pointer issues:
If power is interrupted while the dial pointer is moving or saving its position, the dial pointer may get “lost” or
become misaligned. If this happens, turn the tuning knob to either end. The dial pointer will reset itself.
(3)
