C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

tail lights

Old Feb 24, 2010 | 06:27 PM
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Default tail lights

sos need help on 1986 c4 tail light bulb repacement.
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Old Feb 24, 2010 | 07:21 PM
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Have you tried removing the license plate and accessing via that opening ?
If it's the outer, you might have to remove the inner, to get to the outer.
Never had to do mine, so no real good advice.
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Old Feb 24, 2010 | 07:28 PM
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Originally Posted by AGENT 86
Have you tried removing the license plate and accessing via that opening ?
If it's the outer, you might have to remove the inner, to get to the outer.
Never had to do mine, so no real good advice.
86 is correct. Remove plate and back up light. (7mm socket) Reach in with a 10 mm 1/4" drive and remove 2 bolts. That will get the inner out, then you can reach in and remove the light socket for the outer. If you have fat arms, just get a chain saw and cut the bumper off.
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Old Feb 24, 2010 | 07:34 PM
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Replaced all four of mine. Try to go through the license plate for the inner lights like previous poster stated. If your doing all of them which I recommend, remove the rear bumper. Bought the bulbs from O'Reilly auto store and had to clean off a ton of electrical grease off the old tail bulbs to get them to free up but basically there's a socket they go into and you have to hold the lever in and twist the old ones out. It's pretty simple. The hardest part is bolting the bumper back on. Definitely easier with 2 or three people helping to wire everything back together and put it back on. Hope this helps. If you need more in depth explanation PM me. - Cooters
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Old Feb 24, 2010 | 09:06 PM
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Originally Posted by CooterCatchinVette
Replaced all four of mine. Try to go through the license plate for the inner lights like previous poster stated. If your doing all of them which I recommend, remove the rear bumper. Bought the bulbs from O'Reilly auto store and had to clean off a ton of electrical grease off the old tail bulbs to get them to free up but basically there's a socket they go into and you have to hold the lever in and twist the old ones out. It's pretty simple. The hardest part is bolting the bumper back on. Definitely easier with 2 or three people helping to wire everything back together and put it back on. Hope this helps. If you need more in depth explanation PM me. - Cooters
Thats why I put l.e.d. bulbs in mine Don`t know what GM was thinking when they made these cars.
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Old Feb 25, 2010 | 10:00 AM
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Originally Posted by kenv
Don`t know what GM was thinking when they made these cars.
GM was/is hoping you'll go back to the dealership to have them replaced, $100/hr labor and the 2-3 hours they'll tell you they need the car...
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Old Feb 25, 2010 | 10:06 AM
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Originally Posted by JackDidley
86 is correct. Remove plate and back up light. (7mm socket) Reach in with a 10 mm 1/4" drive and remove 2 bolts. That will get the inner out, then you can reach in and remove the light socket for the outer. If you have fat arms, just get a chain saw and cut the bumper off.
I just put in some LED tail lights last night and thats what I did. Remove the license plate and the reverse lights to free up some room. I also removed the bracket for holding the spare tire tub. There are three bolts holding that in and it sticks up right behind the plate. Only the inners can be reached through the license plate opening but the outer can be reached once the inners are out. The whole job took about 1.5 hours, but I had to give my hands a rest because I could only hole the ratchet in my finger tips.

I have fat arms and my fore arms now look as if I am a cutter!
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Old Feb 25, 2010 | 08:41 PM
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Originally Posted by ggrassmid
GM was/is hoping you'll go back to the dealership to have them replaced, $100/hr labor and the 2-3 hours they'll tell you they need the car...
I can replace all 4 in 45 minutes. Ive had lots of practice in the last 14 years.
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Old Feb 25, 2010 | 09:25 PM
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DO NOT REMOVE THE BUMPER.
That is ludicrous. Just do as previously instructed, take out the license plate, and the backup light, then remove the inboard light, there are 2 10mm bolts holding them in.
Use a 1/4" ratchet and a socket with a short 2 inch extension. Remember, they are all plastic, so a firm hand is all that's necessary.
Then you can get to the outboard one. reverse procedure, and while you are in there, use a medium brush to loosen any dir, or debris.
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Old Mar 3, 2010 | 10:01 AM
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Sorry. I've taken this thing apart so many times to modify the body. I am used to just taking the bumper off. When I think about it if you aren't familiar with taking it apart it's a b*tch and is probably overkill!
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Old Mar 3, 2010 | 10:06 AM
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the inners I did by removing the plate and reverse lights as everyone recommends...but the outers, I just reached up from under the car and changed them that way. Wasnt the easiest thing to do, but beats taking all kinds of stuff off
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Old Mar 3, 2010 | 10:34 AM
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Originally Posted by JackDidley
86 is correct. Remove plate and back up light. (7mm socket) Reach in with a 10 mm 1/4" drive and remove 2 bolts. That will get the inner out, then you can reach in and remove the light socket for the outer. If you have fat arms, just get a chain saw and cut the bumper off.
TFU
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Old Mar 3, 2010 | 10:48 AM
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Marv02 just posted this - he removed, and went through the rear inner fenders. i've never done that, but he indicated it was a lot easier. not sure if it's any faster or not...

http://forums.corvetteforum.com/c4-g...ke-lights.html


Last edited by Joe C; Mar 3, 2010 at 10:52 AM.
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Old Mar 3, 2010 | 10:49 AM
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A recent post here recommended removal of the rear wheel wells for easy access to the outboard lamps.
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