Outside lights only working in the rain

[Richard5233]

Hi
I'm hoping someone could help. I have a horse menage (school) with lighting issues.

The school lighting only seem to work when it's rained but not when it's frosty or dry.

I'm far from knowledgeable but this seems like a bad connection to me.
I noticed that the earth wire and the clamps for it are exposed but I can't get up.to it yet to see if there is any damage to them.

I've check the fuse in the switch and it seems ok but I'm gonna change it still.
Do you have any advice for me in terms of things I could try/look out for that could potentially solve the issue

Many thanks in advance for any and all advice

 

[geraldthehamster]

You might be better off posting this question in the "Electrics" forum, below. "Your Projects" is for sharing information about projects

 

[r896neo]

Is it PIR or just a switched light? It may have a light sensitivity sensor in it so when its gloomy as it rains it comes on but when dry and bright it doesnt work?

Oh just re read the post, is this internal or extrenal?