1989 XJ 4.0 Auto 4x4 116,000 miles

Need to know the smaller bulb size in this picture. It is the brake light. It is listed the same as the other bulb and that is what they sold me. However, it clearly is not the same and not matter how much I tried to make it fit it would not go in in either brake light socket. Looked it up myself and it is listed as what they sold me. So now I'm kind of lost.

So does anybody know what size bulb the brake light is here? The smaller bulb is what I need. I need to pass inspection and can't with out both brake lights.

 

RockAuto shows 2057 and 3157.
3157 seems too small, I think the ones I have on my Jeep is the big one you have pictured.
PS bulbs are super cheap on RockAuto if you need to order other stuff like wiper blades or filters.

 

Rear Turn Signal Light Bulb Size: 1156
Tail Light Bulb Size: 2057 or 3157
Stop Light Bulb Size: 2057 or 3157

hope this helps

 

2057 is what they sold me. It will not go in the socket. I tried both sides of the jeep in case one socket was messed up. Neither side would work and tried over and over and over.

3157 might be the bulb size, but they all have the square bottom insert. I need a bulb that pushes in and turns to lock in, like the rest of mine.

Well this is shaping up to be a weird one. Didn't think I'd have this much trouble finding the brake/stop light bulbs I need. And my Jeep is all original so those smaller bulbs are what it came with. I've had the Jeep 5.5 years and the guy before that had it 25 years and never drove it. It only had 78,000 miles when I got it. This my first time changing this bulb, hence why I have no idea.

 

Here's the page from my 1988 Owner's manual.

 

The side pins on the bulbs are at different heights. Are you sure you don't have it 180 out?

 

OK one last thought. Was the bulb hard to twist out? There's a spring behind the contact plate. When it gets corroded inside, you may have difficulty pushing the bulb in far enough (assuming it aligned right). You can try holding the socket and pulling on the wire a bit to get the spring to compress. Otherwise, you may need a new socket.

 

It may be possible that someone spliced a replacement socket from an unknown vehicle. I am surprised that the bulb you removed doesn't have some type of identification on it.

maybe this will help

 

I think I remember trying it both ways BUT maybe I didn't. I will certainly give this a look. Still weird that my stock bulbs are smaller than the 2057 that are listed in the manuals. I still have my 89 manual as well.

And nothing has ever been spliced into my jeep back there. I thought so too for a minute. Removed the interior side plastic panel. Shined lights all around and seen no splicing. Also the fact that the 2057 would not go into the right or left side of my jeep. And both sides had the smaller bulbs. But I am about to go check and see if I had it turned incorrectly.

 

The bulb mystery is solved...

My brake light takes a size 97 bulb. Thank God, I still had one of my originals, because that is not one of the size that even listed. The 2057 bulb will not fit in a million years.

Once I got the bulbs side by side it is clear why not. The little prongs are at completely different heights. And when looking in the socket the little grooves are much closer to the same depth, like the 97 bulb.

This is strange consondering the 97 bulb is not even listed for an 89 Jeep. And trust me this Jeep has no splicing or any of that. This is the original wiring and socket....probably original bulb haha. Who knows? I'm just glad I still had one of the bulbs or I would have never known.

The 2057 was never working.

 

Just to finish this up for any future readers, who may not have their original bulb or the number is rubbed off. If a 2057 or 3157 will not fit your jeep. The only two listed. Check a size 97. Not sure why mine is that but it is. It went straight in, and I now have an inspected Jeep. And mine is 100% the factory socket. Both sides have this size bulb and no splicing or nothing.

 

97 and 1156 have the same base (BA15S) and are single filament. The 2057 and 3157 are dual filament. The 97 is also 1/3 the wattage as the correct 1156 bulb. You might fail for having dim bulbs.

 

That type 97 bulb looks like the correct bulb for a '34 Packard.

 

I already passed. And the 97 is what both sockets had in it originally. The 2057 would have never went in the socket. I tried and tried and the little prongs are at different spots. The new pack of 97's went straight in, took 2 seconds. Just glad I still had an original or I would have never known.

Maybe Cruiser will pop in and tell us thay back in the day he remembers some taking the 97. I don't know. I just know this jeep is all stock and has no splicing or socket changes. It only had 78,000 miles on it in 2015 when I got and the man before that had it 25 years and never drove it. Plus I took the plastic inside panels off and the back to check for splicing because I was stumped as to why the 2057 would not fit myself.

 

That's where you're confusing me, because the 97 and 2057 are very different bulbs. Just look at the contacts on the bottom in your picture. The 1156 has the same base a the 97 you substituted and the larger glass similar to the 2057. If you stuck the 97 in for the turn or backup lights it's going to be too dim. The post further above shows the 97 is correct for the side running lights though.