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This is the handle for a cable-type trunk release. The bracket mounts to the screws that secure the glovebox liner and the cable passes through a hole in the back of the liner. It only takes a short pull to unlatch the trunk, provided the cable is not rusty inside.
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The cable was routed through the passenger compartment and into the trunk. Then it was attached with clips to the lid hinge, passed into the trunk lid itself and around to the latch mechanism. A tug twists the latch in the same way the key would turn it.
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This manual latch assembly is relatively simple in operation. The cable is pulled through the latch hole and attached to the latch release rod, then the latch then pushed into position and secured. Any slack in the cable can be pulled into the trunk and secured with the clips.
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This electric version uses a button that mounts to the side of the glovebox liner. The wiring runs into the trunk, and power comes from a pigtail connection attached to the underdash wiring harness. The button dispatches power to the solenoid, activating the latching mechanism.
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The power wire is routed the same as the cable, again attached with clips to the hood hinge. A heavy plastic sheath, to prevent wear at metal contact surfaces, protects the wire. The installation shown here is in a 1970 GM A-body.
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Notice the difference between the manual and power latches. The power latch has a protrusion at the top, which houses the solenoid. The wire from the button plugs into the wire from the solenoid. The extra cutout in the trunk sheetmetal is for the solenoid to pass through.
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