To find it, you'll need to consult your owner's manual. This is the most reliable source. The manual will have a diagram of the fuse box(es) and relay locations, clearly indicating which fuse or relay corresponds to the rear wiper.
If you don't have the manual:
* Check the main fuse box: This is usually located under the dashboard, often near the steering column or under a cover panel. It might be labelled "habitacle" or similar.
* Check the engine compartment fuse box: This is usually located near the battery in the engine bay.
Look for fuses of a relatively high amperage (typically 15-30A) or a relay that's labelled as relating to the rear wiper, wash/wipe, or similar. Never work on electrical systems without disconnecting the battery's negative terminal first.
Without the manual or a schematic, identifying the correct fuse/relay by trial and error is risky and could damage other components. If you're uncomfortable working with car electrics, it's best to take your 306 to a qualified mechanic.
