I've had a solenoid release on the boot for 3 years or so, and the fuel cap for 2 years......
The boot is fairly well documented, but i can't remember if i ever did the fuel cap write-up????????
It was a bit of a phaff, but i got there without using cables, and by drilling a hole between the boot (trunk!) and the filler neck. Then the solenoid could be mounted in such a way that it operated in the right direction to pull the lever which flips the latch, using a metal rod (bent to a bit of a strange shape to clear everything).
That way, the cable is retained exactly as original, so it can still be opened when the solenoid packs up, or we have a flat battery ( but why put fuel in a car with a flat battery????)
The first one i did took most of a day to sort out how to do it, the second one was completed in just over an hour, with an electric release (one car off a Saab, one off a Range Rover), which is hidden under the lid of the storage compartment in the armrest.
Makes it a hell of a lot easier at the petrol (gas!) station, especially when it's raining and the passenger moans when you have to open their door
