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Discussion Starter · #1 · (Edited)
I picked up a pair of 2011 OEM Tails and they arrived today. If you're not familiar with the swap, the tail bulb socket fits the new tails, but the reverse socket is a smaller size. My original plan was to go the same route everyone does: Cut the 99-07 reverse socket off and wire up a newer, smaller socket to fit the reverse bulb hole on the new tail lights.

Honestly, I don't dislike the 99-07 tail lights, my only complaint is the style is showing its age - They just don't have the sparkle that the new style (08+) have. Just to see how it was going to look, I decided to put the 08+ tails on the truck and see how I felt about the look before I committed to cutting the factory socket off of my truck... Honestly, even with spade connectors making things reversible that way wouldn't make me happy simply because I'd have to cut the original harness...

I decided that I wanted to see if there was any way to make this conversion EASILY reversible... say with some kind of bulb/socket adapter. Then I started brainstorming...

For starters the reverse bulb on the 99-07 trucks is a 3156 bulb. This bulb has just two wires/connections on it which come out of the bottom of the plastic part and are just folded back over. When you plug the bulb in, the wire coming out of the plastic makes contact with the metal terminals in the bulb socket. Very simple concept.

Here's what I used/bought:

2008 tails (obviously!)
(2) Dorman 85814 sockets (comes with about 6-7" of wire)
(2) 921 bulbs
(2) 3156 bulbs (I had some old blown ones lying around)
(2) Foam gaskets for the new bulb socket (to keep the moisture out of the light)

Basically what I've built so far is a bulb-socket adapter that will plug into my 99-07 reverse bulb socket on the truck side and then plug into the 2008+ tail lights. Here's what I've got so far:

To begin, I took the 3156 bulbs and disassembled them. It was easily done by simply unfolding the wire coming out of the socket - straight. Really, you could just snip the tiny wire because all we're trying to do is remove the bulb so that we've got just the plastic piece.



Once you've got the glass part of the bulb out, toss it away. Then take the new Dorman 85814 socket/wiring and cut about 3/4" of the wire jacket back. Next, untwist the individual wire strands. I cut all but 4 or 5 strands. (Don't worry, taking these strands out won't cause any problems!) Take the remaining strands and twist them very tightly together. The goal here is to try and make the overall diameter just small enough to fit through the plastic part on the bulb (where the wire that was removed went). Be careful that as you're trying to get the twisted wire into the hole in the plastic that it doesn't fold inside the plastic - Be patient, it will fit.







Once you've gotten the wire through (as a test), remove it and "tin" it with some solder to keep it together. Then you'll reinstall both wires in the holes and then fold them over (the same way the bulb wires were originally folded over). You may have to heat the wire up for a sec with the soldering iron to get it to bent and contour the plastic correctly.

You'll be left with this:



If you're using the Dorman sockets, you'll have to do a little notching on either the socket itself or the socket end of the tail light - It doesn't take much, but it needs to be done.

You will need to seal/waterproof the wires going into the modified bulb socket - You can most likely just use gasket maker for this. I'd recommend using something like a Permatex Dielectric grease for the socket where the modified bulb plugs into the truck's harness.

One you've got this all done, all you have to do is plug this modified socket into you're harness and then install the new tail lights. If you want to swap back to your stockers or an aftermarket light, you'll be able to remove the adapter and put your 3156 bulb back in the connector. No fuss, no cutting the factory harness...

Enjoy!

[edit] I finalized things this morning. I "tinned" the wires with solder; Doing so increased the size of the wires slightly and I had to use a VERY small drill bit and drill into the end of the bulb plastic to enlarge the hole slightly so that the tinned wires would pass through. Once the wires were back in place in the plastic bulb base, I used some gasket maker and sealed around the wires. Once this had cured, I used some Permatex Dielectric Tune-Up grease inside of the OEM-truck side reverse bulb socket. Then I simply plugged in the modified adapter into the factory bulb socket and reassembled everything. IT WORKS GREAT! ...and is completely (and very quickly) reversible with no evidence of any modification if you should decide to go back to the 99-07 style tails later on.

 

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Good idea! I put the 08's on my truck but have been running without reverse lights for months now. I didn't want to cut into my harness either and have been looking for other methods of getting the lights to work. Any part of the adapter get hot?
 

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Discussion Starter · #3 ·
Good idea! I put the 08's on my truck but have been running without reverse lights for months now. I didn't want to cut into my harness either and have been looking for other methods of getting the lights to work. Any part of the adapter get hot?
Nope - I had the reverse lights running constantly for 15 minutes or so and none of the wiring or anything showed signs of getting warm. I was a bit concerned that cutting all but 4-5 strands of the 16awg wire would make the wire get hot, but being that it's only 4-5 strands for about 3/4", it's not enough to cause problems - Another way to look at it is the bulb itself, in the standard socket uses smaller gauge wiring than what I'm using. No worries at all.
 

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Thats great to hear. How much do you have in the set of pigtails?
 

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Discussion Starter · #5 · (Edited)
$13 total.

(2) Bulb Sockets: $8
(1) Pair of 921 bulbs: $5

The 3156 bulb bases that I used were freebies since I had 'em lying around - But you can use the ones from your stock tails and they're still free. ;) I also had some of the foam gaskets lying around from some other bulbs. The foam isn't 100% necessary, but I had it, so I used it.
 

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This is what we call OEM+ Mods... I really want to do your PF mirror conversion on my 06 Lariat after i come back from afghanistan. I have to wait till after i finish my motor build on the R32.
 

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Discussion Starter · #7 ·
"OEM+" - I like it! Let me know if you've got any questions!
 

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Discussion Starter · #9 ·
:worthless[1]: hahaha I wanna see pics of the new tail lights. BTW, that was very ingenious!!!!
Ya got me... You want pics of 2008+ tail lights?
 

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Yeah, I wanna see pics of the install. I really wanna do the mirrors as well but damn that's a lot of $$$$ just to have a mirror that folds out and extends when my arms are more than capable of doing it, but the tail lights could be done way cheaper and look good. Let's see the end result buddy!!!
 

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Discussion Starter · #11 ·
Thats great to hear. How much do you have in the set of pigtails?
Did you get your pigtails installed? Did you wind up trimming any of the reverse light housing on the tail light itself or on the bulb socket?
 

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Discussion Starter · #12 ·
Anyone else try this yet? Mine are still working perfectly! :) I didn't know if I'd like the 08+ tails initially, but they've really grown on me! I LOVE EM!
 

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just bought a set of the adapters, looks clean and well done, just waiting for the lights to show =D
 

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I did this a few weeks ago, but instead of using the universal pigtails i got some 08 connectors from the wrecking yard. So far so good
 

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nice! yeah cool thing with these is they plug into the stock light harness, so they can be converted back to the 07-older lights. any pics of your install on the truck?
 

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No pics, I made mine the same way with the 3156 base so I could change back if I decide to.
 

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Discussion Starter · #18 ·
No pics, I made mine the same way with the 3156 base so I could change back if I decide to.
Cool - If a 2008+ donor truck can be found, that's a viable option - The lack of parts trucks around here prompted me to begin building these adapters.

-Brian
 

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^^ yup thats pretty much my story is no parts trucks around. few junk yards with random cars, but have yet to find one with a super duty
 

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Thats a bummer guys, I feel lucky to have a decent size wrecking yard locally and buddies that work there.
 
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