A couple of thoughts come to mind but it will depend on how the car is built/wired.

One would be a slim jim if you can fish it to the activating rod on the door latch.

If you have a Chevy engine and it is wired where the main power is pulled from the main lug on the starter solenoid you might be able to crawl under the car with a jumper wire from a 12 volt battery (ground the car to the - side of the battery) you might be able to energize the circuits that way.

Finally, if you can pull one of the taillight lenses and bulb you might be able to energize the circuits by back feeding thru the brake light wire.


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