LED Mod Thread

richphotos

Well-Known Member
Yeah, the taillight boards are definitely CK and I changed out the reverse socket for a standard not knowing.

I have ordered a standard switchback which will be here on sunday and I hope it all works. Thanks guys.


My other set I made are starting to fail so I am doing this.
The bulbs got used so many different times over the last 10 years.

Might be selling my optidrive PWM though :wink:
 

richphotos

Well-Known Member
Well, same problem different bulbs.
Turn the lights on amber glows too. I am giving up on this for now. All the info I have found is gone.
 
OP
OP
Blckshdw

Blckshdw

Moderator
:undecided: So did you gut the insides of these boards, and run new sockets through the rear? (the modded tails I bought off a former member for my current project were done this way) Or did you use the existing connections, and just modify the reverse socket to receive the signal from the traces?
 

richphotos

Well-Known Member
I modified the reverse socket to accept the signal circuit *kinda* I got 3157 sockets off amazon and wired up the wires to their connection in the tail light board

I am guessing that's where I went wrong somehow
I don't want to give up yet lol to I am open to things to try. I am guessing a diode or a load resistor somewhere. Or have them all standard or ck instead of mixing one standard and the top 2 are ck.
 
Last edited:
OP
OP
Blckshdw

Blckshdw

Moderator
Any chance you can provide some pics? Maybe something will stand out to additional sets of eyes.
 
OP
OP
Blckshdw

Blckshdw

Moderator
Is your pic mirrored? It looks like all your pin assignments are the reverse of what mine are.

Edit: This is how mine look, the Dorman boards.

 

richphotos

Well-Known Member
Thanks. I think I will pick up a couple of those and play around. Is there a diagram of the tail light harness anywhere?
I appreciate the help, I was running out of ideas.
 
OP
OP
Blckshdw

Blckshdw

Moderator
You can get the electrical wiring PDF from the link in Mooseman's signature. I have a cut down version of it, for the 2 pages for the tail lights on my laptop at home, otherwise I'd post it.
 

richphotos

Well-Known Member
From my searching, this appears to be the pin out for the harness?

Park - turn signal - reverse - brake - ground.

If that's correct, I have them wired up correctly. It must be the ck sockets. I will see when I get the others
 

Attachments

OP
OP
Blckshdw

Blckshdw

Moderator
:duh: Yeah you're right, sorry. When looking at your pic, I didn't recognize that your pins are pointed down, instead of up like the Dorman board pics
 

richphotos

Well-Known Member
Same issue as before, turn signal illuminating when the lights are on

I put a stock board on one side with led bulbs in it and the turn was lit up on that as well. I wiggled the trailer harness and noticed the lights flickering and getting brighter and more dim.
When they are plugged in, both dash indicators are solid lit as well.

There has to be a short somewhere.

For the time being, the tails I built and are running off the trailer harness still works.

I'm just confused now.
 
OP
OP
Blckshdw

Blckshdw

Moderator
Hmm, and you confirmed the proper power signals at the trailer plug itself? It sounds like you're definitely back feeding into the turn signal circuits for both sides. Maybe try disconnecting the parking light connection, and see if it behaves as expected otherwise?
 

richphotos

Well-Known Member
Im going to throw some incandescent bulbs in tomorrow to see if the problem continues
Turn circuit is definitely back feeding and I am not sure why.

I unplugged everything at the trailer harness and was only using the oem harness that plugs into the tail lights.

I wonder if pulling the trailer harness fuse? Is that under the hood or back seat?


When you say unhook the park circuit, where?

Thanks for the help, this is wacky 😂

I can never have a project go smooth
 

richphotos

Well-Known Member
Found a fuse I will try and pull and also check #42 rear fuse block, trailer park fuse
I have only tomorrow for awhile to play around. Monday and Tuesday will be about 0f for a high here in Minneapolis.

Well, now I will have 4 boards set up for quad brake/ park with turn in the reverse socket 😂
 
OP
OP
Blckshdw

Blckshdw

Moderator
OK, I thought you were feeding the tails from the trailer plug. OK, maybe try opening your boards, and pop out the pin that's receiving the parking light signal. Since that seems to be the one feeding both turn signals.
 

Sparky

Moderator
Geound may not be direct full ground. I've noticed some of these things use a floating ground on some lighting circuits, and that can result in wacky operation. I do not know if that's the case here exactly, but thought I'd throw it out there.
 

Online statistics

Members online
1
Guests online
215
Total visitors
216

Members online

Forum statistics

Threads
19,800
Messages
585,392
Unanswered questions
2
Answered questions
1
Members
12,558
Latest member
Nate Saxby
Top Bottom