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ICQ>
Eric ---
I chased that on on my '82 a month ago. As Dylan explained, the relays are behind/under the center dashboard vent. You may want to remove your stereo for more access.
The two relays (one for lock, one for unock) are sitting on a wiring harness. I found I had an intermittent crimp connection on one relay -- it supplied power to the system, so sometimes it was dead. I soldered the crimp connections -- problem solved. Another Brickster pointed out that coffee, or other beverages, might get "sloshed" (poor choice of words) over the relays through the vents. (I confess to balancing my coffee cup on the tray.)
Another factoid for you: The locks are actuated by small motors. The motors have thermistors in them to protect the motor from overheating. (This can happen if you're driving down the road on a warm day, window down, arm out, resting on & pushing down the button for 15 minutes. The motors can't take the current for that long without overheating. The thermistor gets warm and limits the current.)
The thermistor is a small disc about the size of a penny, and is inserted between two clips inside the motor. Each face is silver coated, and after years the coating gets tarnished and won't conduct current -- so the lock motor fails. You can clean the silver coatings by (gently) scrubbing with a pencil eraser. Avoid fingerprints or other contamination when reinserting the thermistor.
When reassembling the motor, be sure to install the rack and gears properly -- otherwise the motor will act backwards. (You only have two choices -- right or wrong.)
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