INSTALLATION DRAWINGS
Original Radio
New Radio
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. The radio is much smaller when viewed from the back than the original was, so the original mounting bracket won't fit.
Included with your radio is a 9 inch Backstrap that can be easily cut and bent to any shape or size. It should be attached to the
threaded ¼ -20 stud on the back of the radio near the antenna jack and to the lower lip of the dash. Pull the outer knobs from the
control shafts. Remove the backrings and the outer shaft nuts. Remove the dash plate. Do not remove or loosen the inner shaft
nuts! Position the radio in the dash place the chrome dash plate over the control shafts and secure in place with the shaft nuts.
Do not over-tighten! Replace the backrings and outer knobs.
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 the dial pointer gets stuck at one end or if it is misaligned, hold down one of the 5 preset buttons for 5- 10
seconds to realign or free dial pointer. If the dial pointer is stuck at one end of the dial, turn the tuning knob. The dial pointer
should try to move while you're turning the knob. Continue to turn the tuning knob until the pointer resets itself.
Specifications
11-16 Volts DC Negative ground only
Output: 180 W. RMS (45 W x 4 speakers @ 4Ω 14.4 V, 1kHz)
10 Presets (5 AM, 5 FM) Digitally tuned w/analog display
Dimensions: 8.25” W x 3.5” H x 3” D (behind dash)
3.5mm stereo input jack, Standard (Motorola) antenna jack
Left, right and sub woofer outputs use standard RCA jacks
1/2” shafts on controls are identical to original
Memory retention (presets and user settings) more than 40 years
3 (end)
