Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Adding cab lights?

Thread Tools
 
Search this Thread
 
Old Jul 30, 2013 | 09:35 PM
  #16  
Big_Red_Brute's Avatar
Big_Red_Brute
Tuned
Joined: Jan 2008
Posts: 281
Likes: 0
From: Virginia
Originally Posted by Diesel_Brad
If they are installed correctly, they will not leak and Not need silicone
I agree with you, however I still recommend it as a preventive measure. Plus we are talking about aftermarket parts here, and they don't always fit like OEM parts do.
 
Reply
Old Jul 31, 2013 | 04:56 AM
  #17  
Diesel_Brad's Avatar
Diesel_Brad
Fleet Owner
15 Year Member
Photogenic
Liked
Loved
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
It is amazing how a Gasket and O rings work
 
Reply
Old Jul 31, 2013 | 07:36 PM
  #18  
parkerparkerm's Avatar
parkerparkerm
Elder User
Joined: Jun 2012
Posts: 650
Likes: 0
From: Plant city florida
Originally Posted by Diesel_Brad
It is amazing how a Gasket and O rings work
i cant tell if you're being a smart *** or if youre being serious...

but either way you're acting like you still o.O
 
Reply
Old Jul 31, 2013 | 09:46 PM
  #19  
Diesel_Brad's Avatar
Diesel_Brad
Fleet Owner
15 Year Member
Photogenic
Liked
Loved
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
A GASKET seals the light to the roof and O RINGS seal the screws.
If not then you either need a New gasket or new O rings

No need for ANY silicone
 
Reply
Old Jul 31, 2013 | 10:11 PM
  #20  
parkerparkerm's Avatar
parkerparkerm
Elder User
Joined: Jun 2012
Posts: 650
Likes: 0
From: Plant city florida
Buuuuuuuuuuuuuuuuuuut silicon makes the world go 'round!




(Just messin)
 
Reply
Old Aug 1, 2013 | 02:33 AM
  #21  
ATC Crazy's Avatar
ATC Crazy
Hotshot
Community Builder
Loved
Community Favorite
Top Answer: 10
Joined: Jun 2003
Posts: 12,350
Likes: 4,383
From: SW VA
I've seen new gaskets and O-rings still leak on other things. That's why they make RTV.

I'd use silicone...
 
Reply
Old Aug 1, 2013 | 05:02 AM
  #22  
Diesel_Brad's Avatar
Diesel_Brad
Fleet Owner
15 Year Member
Photogenic
Liked
Loved
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Silicone is a band aid to the real problem
 
Reply
Old Aug 1, 2013 | 06:52 AM
  #23  
joegeds's Avatar
joegeds
Elder User
Joined: Feb 2013
Posts: 856
Likes: 3
From: Livonia, MI
Wow - I never thought a silicone vs O-ring fight would break out in this thread!! While not on the level of the V-8 vs Straight 6 legendary brawls I've seen on other threads, I could see that coming! I don't have a dog in this fight, but it's been my experience that o-rings and rubber gaskets will leak or breakdown over time - especially in hot/dry conditions. However, silicone can be somewhat messy and most over-apply it. On an application like this, I would use both. I think having silicone on the O-rings/gaskets will lengthen their efficiency, and provide a bit more of a seal if needed. If/when they leak in 10-15 years, I'll replace them.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-1

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-2

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-3

Every 2026 Ford Engine Explained

 Brett Foote
story-4

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-5

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-6

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-7

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-8

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-9

Top 10 Ford Truck Tragedies

 Joe Kucinski
Old Aug 1, 2013 | 08:08 AM
  #24  
Big_Red_Brute's Avatar
Big_Red_Brute
Tuned
Joined: Jan 2008
Posts: 281
Likes: 0
From: Virginia
I never thought we'd be in an argument over this either. Seems kinda sad and funny at the same time. I wasn't saying to use silicone to glue the lights on or gob it on to where it looks nasty. All I was saying is to use a little bit around the wires where they come through the cab and on the threads of the screws as an extra means of securing that the lights won't leak after they are installed because it seemed that the intallers were worried they would.
 
Reply
Old Aug 1, 2013 | 09:16 AM
  #25  
Diesel_Brad's Avatar
Diesel_Brad
Fleet Owner
15 Year Member
Photogenic
Liked
Loved
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Silicon / RTV has is uses, but not for sealing a gasketed light. When a bulb goes out(which they do) then you will be PRYING the light off the roof. A gasketed light will come right off.

I have been installing cab lights for over 20 years(I venture to say 20+ sets) and still have the 1st truck I installed then on. NO LEAKS and they have been off a couple times to replace bulbs.

Now for silicone on Visor screws, YES. Cab lights, NO
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Anamosity86
1987 - 1996 F150 & Larger F-Series Trucks
8
Mar 10, 2016 08:39 PM
redman84
1994.5 - 1997 7.3L Power Stroke Diesel
62
Jul 6, 2010 09:48 PM
Firekite
1999 - 2016 Super Duty
23
Feb 9, 2010 01:47 PM
speckfisher
1999 - 2016 Super Duty
2
Nov 15, 2008 12:58 PM
Trav460
1999 - 2016 Super Duty
4
Nov 15, 2007 11:41 PM




All times are GMT -5. The time now is 02:56 AM.

story-0
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-1
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-2
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-3
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-4
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-5
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-6
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-7
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-8
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-9
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE