On 9/17/2017, Thomas Aczel in Australia wrote:
"My MGA has a High Gear Engineering Ford T9 five speed gearbox conversion fitted. Despite the close confines of the MGA transmission tunnel, you can (just) fit a reversing light switch into the intended hole in the transmission case. It helps greatly if you can find the original style of rubber cap for the switch which is close fitting, has a right angle take off for the cables, and provides excellent weather protection.