Leaks from interior light

Body parts, seats, dash, headlining, windows and stuff!

Moderator: Board Moderators

Post Reply
dancroft1984
Regular Poster
Posts: 114
Joined: Sun Apr 17, 2022 22:40

Leaks from interior light

Post by dancroft1984 »

Hi all,
When it rains I get a drip from above, it turns out the interior light gets water in and is leaking. Is this a case of re-sealing the aerial above it, or something more sinister?
Thanks,
Dan
1985 Lotus Excel dug out of a hedge

User avatar
rbgosling
Senior Poster
Posts: 2016
Joined: Sun Jul 04, 2010 22:55
Model: Lotus Excel SE
Colour: Midnight Blue
Year: 1990
Location: Rugby

Re: Leaks from interior light

Post by rbgosling »

Unless you have a sunroof (or someone's punched a hole in your roof!) then the aerial or the windscreen are the only possible culprits. Since the aerial is much easier to deal with, I'd definitely try re-sealing that first before you contemplate the windscreen seal. Gut feeling is that it is more likely to be the cause anyway.
"Farmer" Richard

1990 Lotus Excel SE (Lilith)
2022 MG MG5 EV (not due to be a classic for quite a few years...)
2011 Nissan Leaf (Ragly - EV pioneer, must be due to be a classic one day)

User avatar
Alan_M
Senior Poster
Posts: 1474
Joined: Sat Aug 12, 2017 01:17
Model: Excel SE, Excel SA, Elan SE
Colour: Red, red, white
Location: South Wales

Re: Leaks from interior light

Post by Alan_M »

I’ve had that on 2 of mine. Both times it was the aerial.
As a quick fix I tried a bead of silicone around the edge, but as aerial was a little loose it moved and broke the new seal.
The challenge was then undoing the screw that holds the aerial on. Had to drill one out (just a few weeks ago) and still not freed off what’s left of the screw. Roof has a grommet in it which has kept water out on a temporary basis.

HC180
Regular Poster
Posts: 143
Joined: Sun Nov 25, 2012 11:11
Model: Excel
Year: 1991

Re: Leaks from interior light

Post by HC180 »

Sometimes they must be un-done from the nut underneath (the screw is static). Made a new “bung" for the screw from Silicone.

User avatar
Alan_M
Senior Poster
Posts: 1474
Joined: Sat Aug 12, 2017 01:17
Model: Excel SE, Excel SA, Elan SE
Colour: Red, red, white
Location: South Wales

Re: Leaks from interior light

Post by Alan_M »

HC180 wrote: Sat Jun 07, 2025 23:40 Sometimes they must be un-done from the nut underneath (the screw is static). Made a new “bung" for the screw from Silicone.
The nut on mine was in a moulded depression to hold the nut while screw turned. Even with the nut removed from mine it was not possible to pull the screw through the mounting.

dancroft1984
Regular Poster
Posts: 114
Joined: Sun Apr 17, 2022 22:40

Re: Leaks from interior light

Post by dancroft1984 »

Thanks all. Another job to add to the list! I'm doing the headlining in a few weeks so I'll be able to address it then.
1985 Lotus Excel dug out of a hedge

Post Reply