wheel bearing, finnis no. 5007 028, £19.87+vat.

choice of 2 reverse light switches, up to 03/1989 6031 219, £10.47

from 03/1989, 6871 978, £10.26

the reverse light switch is located in the front side of the gearbox, behind the intercooler. you should be able see the wires leading to it.