Where is the reverse light switch on a B5?

[tdi-till-i-die]

My reverse lights aint working, replaced both bulbs still aint working? i'm getting a power to where the bulbs go because i've checked with one of them thingy ma bobs, only thing i can think of now is the reverse light switch, i'm guessing its in the gearbox area somewhere? how do i gain access to it?

PLEASE HELP!