Before I do this I need to ask a stupid question. But first, from what I've read the backup lights are controlled by a switch screw into the transmission. Its's said to comprised of a spring and a little steel ball I should not lose . Also need to mention the I've checked the electrical connections and all are good. Just no signal from the switch.
Now the question. Will removing this switch (since it's screwed into the trany) dump the transmission fluid?