I replaced the Dash lights with the super bright leds, the LED's i got are WLED-BHP6 (194/168) wedge base, i got the blue high power ones. i installed them and none of the 6 i used work. the package does say non-polarized so i dont know if thats the problem or not. i did plug one of the LEDS into the OIL pressure gauge socket and it worked but it wasnt very bright. so any help is appreciated, Thanks

 

make sure your dash dimmer/rheostat is turned up all the way. I don`t think LED`s like less than their rated voltage.

 

i made sure it was turned up, i took the LED's back out and put brand new regular bulbs in and they didnt even turn on. so theres a problem somewhere? In this circuit if one bulb doesnt work, then will the rest not work either??

 

hmmm. might have blown a fuse perhaps? the tail lamps are on the same circuit I believe, are they lighting up?

 

Its not like a christmas tree. One blown should not affect the others.

 

all my lights are working except for the dash lights. tail lights work, cab lgihts work just not my dash lights, does the red connector behind the heater switch have to be plugged in for everything to be working, right now i just hace to 2 connections that go to the dash assembly plug in. i didnt wanna put everything back together becasue of this reason

 

i took a voltmeter and put it on continuity test, and test the sockets and all 6 of the sockets with LED's plugged into them were bad!! i managed to make 2 sockets work by closing the small pins together, but the other 4 wont make contact. so does napa carry these sockets in stock?? oh and on the LED's i bought i can make them light up a little by touching them with my voltmeter?? haha

 

There will be a fuse for the Instrument Lights it is a 3-Amp and should be Fuse #14.

Also the LED's will be polarized but what are the odds you got all of them backwards.

Some of my sockets would not work until I closed up the contacts for the wedge base; the #194 was wider and caused a loose fit with the LED's.

Check your fuse, or it could be a ground.

I believe all of the lighting is through the round connector, I hope you fixed your ground while you were in there.

You can get the sockets at Auto Zone, Pep Boys, Napa and make sure you get the correct size.

Jim

 

well that fuse was blowed, i replaced it and it blew again!! i dont get it because before i started they was working fine

 

well i just went back to the regular bulbs and it will work, im just not gonna use the LED's, because they keep popping fuses. Thanks guys for all your help

 

Try and check each LED by connecting it to a power source, you might have one bad one and examine he insides of each socket.

There has to be something wrong with one of them because they this should be a simple installation.

If you have the cluster out you can look at the sockets and the foil traces under them and see that the brass contacts of each socket are on the foil pads. It should not be possible so short out the board with a socket.

You should try and find out what happened because you would really like the difference of the LED's because they are so much brighter.

Let me know if you have any questions as I have pictures of the circuit board in my write up and I might be able to help.

https://www.dieseltruckresource.com/...d.php?t=209884

Jim

 

I bet I know why the LED's were popping the fuse. I bought some LED's to upgrade the dash lights on my ol' Benz. The way they were wired could cause a dead short in some sockets. If you look at the bayonet base on a 194 bulb, there is a contact wire on only one side of each pole. The LED's I bought had a contact wire on both sides of each pole. This works OK if the socket has the poles on the "left" and "right" sides of the base, but if the socket has the poles on the "front" and "back" then a bulb with the extra contact wires will cause a dead short. All I did was fold one contact wire over to the other side.

 

Good idea Dave,

airforce27,
Where did you get your sockets from?

Most of he stock ones from Dodge had a non-replaceable lamp in the socket and at sometime in its life they were changed.

At least that is what I have found on the trucks I have worked on.

 

I stole my sockets out of a '82 Dodge instrument cluster I had laying around when I did the LED conversion. Auto parts stores should still have that style.

 

i got them from superbrightleds.com they look just like the ones used in the LED conversion sticky.i went to napa and they didnt have the right sockets