Brake lights stuck on....brake light switch?

[The motor guy]

@Arc, the OP has a hydraulic booster since it's a diesel truck. Vacuum boosters used on gas vehicles (or diesel with a vacuum pump) are not considered field serviceable.

Is the vacuum booster the one with the big round thing behind the master cylinder on the gassers? Diesels have both a seperate vacuum pump and hydraulic booster

 

[Arc]

I put the new switch on and the lights went off. All fixed

Take the old one apart and see what's inside.

 

[The motor guy]

Take the old one apart and see what's inside.

With that being said, I didn't bother to check if they worked either lol

 

[SammyChevelleTypeS3]

I put the new switch on and the lights went off. All fixed

Glad you escaped without too costly a fix and that you could handle for yourself. The spring loaded brake switch is kind of a common thing on long owned Honda Accords that I have had to replace on a few. Thank goodness they are easy to access.

 

[The motor guy]

Glad you escaped without too costly a fix and that you could handle for yourself. The spring loaded brake switch is kind of a common thing on long owned Honda Accords that I have had to replace on a few. Thank goodness they are easy to access.

The instructions were the most confusing part. Sounds like as long as you leave the brake pedal alone when you flip that little switch youre good. I had to push the pedal in to get it installed, but didn't touch a thing when flicking that one time use toggle switch

 

[SammyChevelleTypeS3]

The instructions were the most confusing part. Sounds like as long as you leave the brake pedal alone when you flip that little switch youre good. I had to push the pedal in to get it installed, but didn't touch a thing when flicking that one time use toggle switch

Mine were different. The ones I have replaced in a couple of Honda cars were easier than I expected. They were made out of a hard plastic that over time just cracked up and fell apart. I was lucky and able to remove the remains of the old one with an open end wrench and hold the pedal down with one hand while threading the new one in place. I was just so thankful they were very easy to reach without all kind of body contortions and laying upside down twisting myself under the dash like when doing some other things in the past. They are all made different by each manufacturer.

 

[The motor guy]

Mine were different. The ones I have replaced in a couple of Honda cars were easier than I expected. They were made out of a hard plastic that over time just cracked up and fell apart. I was lucky and able to remove the remains of the old one with an open end wrench and hold the pedal down with one hand while threading the new one in place. I was just so thankful they were very easy to reach without all kind of body contortions and laying upside down twisting myself under the dash like when doing some other things in the past. They are all made different by each manufacturer.

I had a hard time until I read the part that recommended removing the lower cover of the dash under the steering column . That made it a lot easier.

 

[SammyChevelleTypeS3]

I had a hard time until I read the part that recommended removing the lower cover of the dash under the steering column . That made it a lot easier.

I bet. I most certainly lucked out by the design of the ones I replaced by not having to remove anything but the bad switches.
I bet the replacements on those took me less than 20 minutes.
One of the best old mechanics I learned a lot from on the job had a saying I though was strange until I started getting many different types of repair jobs. He used to say "Sam, its just like this. Sometimes we are the windshield and sometimes we are the bugs. SPLAT!