wiper relay

[andrew1608]

can anyone tell where the relay is located on the rapier for the front wipers

[Doggy]

Assuming your car is a later D9, then there is no separate wiper relay - its in the BSI, (Built-in Systems Interface), which is probably about the most difficult / expensive item to replace on the car. You were asking about the wiper motor yesterday, have you proven the problem is external to the motor?

[andrew1608]

i have not proven it's not the motor, i surpose i will need to wait till saturday and get it checked at the garage, the wipers are both working they just don't stop in the right place, when i hit the one wipe they go for about 6 wipes and then stop near the top of the windscreen

[djp30djp]

I had a similar problem about a year ago, wipers kept doing five wipes & stopping mid screen.
[/quote]
I've found someone selling new ones on e-bay for £110 which isn't too bad I suppose, but as I say I will leave it for a bit & see if it fixes itself. The wipers on the other one had a fit for about a month & would only wipe five times & stop mid screen, no matter what position the switch was in. Move the switch to another position & the same thing happened again.
That was nearly a year ago now & they have been fine ever since?[/quote]

[andrew1608]

i went to my local dealer today on on-route the wipers started working normally but i was told that there are 2 fuses for the wipers, there is the normal fuse but there is also a wiper parking fuse but the guy in the garage said there was only one mechanic in and he was unable to show me where to find the fuse.

[Doggy]

According to Haynes, there are 2 fuses involved, F20 & F22 in the passseger fusebox.
F20 is a 20A fuse which powers the front wipers / washers and is almost certainly OK.
F22, (10A), supplies the rain sensor, (assuming you have auto wipers), plus interior lighting & seat memory.
Unless your interior lights don't work either, F22 is likely to be OK too, (but no harm checking).
Looking at the wiper control, it's apparent that the 'self park' function is implemeted via the BSI, which relies on the limit switch within the wiper motor pulling one of the BSI inputs down to zero volts when the contacts are closed. As this will involve only a tiny current flow, the slightest wear or contamination of the limit switch contacts will give unpredictable behaviour.
This is, I think, the most likely scenario for the problem you describe.
I have no idea whether it's possible to access the internals of the wiper motor, perhaps someone else has done it?