Hi everyone. I have a problem with my windscreen wiper. My Sei has been off the road for 18 months and I'm getting her ready to go back on again.

One problem I used to have was that in generally damp weather, if I tried using the intermittent setting it would just go on full setting but in drier/warm weather it would be fine.

Wondered if anyone else had this problem at any time and if so, how they dealt with it.

Thank you.

I googled 'In wet weather my wipers only work on fast setting' and some results show dodgy wiper motor, others - relays - apparently simply unplugging the relay and then plugging it back in again can cure the fault. I've got the motor out so will try and strip it, dry it out if necessary and seal again afterwards.

Well so far with this thread I have absolutely inundated myself with a response and so I shall continue. I opened up the wiper motor and the contact area in the motor was covered in grease, some of it had hardened. I've cleaned it all out now but will source a very light grease before putting the motor back together as without some sort of lube I shouldn't think the contacts will last very long.

Collected my seat earlier which I've had welded at Avanti and asked the head guy about my wiper problem and he believes it's the contacts which you can see in the picture above. Will put it all back together and once it's all up and running I'll find out if I've solved the problem.

As you've gathered you need grease in there, I've opened up new ones and there's been copious amounts of grease in there sometimes quite thick grease.

Seeing as you've opened up the motor try looking at the pins for the plug, there could be corrosion on them or even inside the motor itself, best way to know for sure without stripping it down is a resistance check, you're looking for a lowish resistance but I'm not sure of the rough resistance you're after.

You're right about the pins for the plug. I was discussing this with Avanti earlier. Sometimes they become weathered or glazed for want of a better description. I did notice the contacts in the plugs looked like they would benefit from roughing up with an emery cloth. Process of elimination.

Also get some contact cleaner on them and before you plug it back in spray the contacts with some stuff called damp start I think it's called. Works wonders at keeping moisture out of things, works on all electrical components and doesn't affect the operation of the component

And spray contact cleaner in the plug itself as well just to be safe.

Cool. Thanks for feedback.WD40 white lithium grease.

No problem