Dash Cluster Question - 68 Barracuda

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Could you give me some details on how to bench test?

Jeff

Jeff, I think If I was you I would PM Del (67Dart273) he is an electrical guru. He could walk you through how to bench test. I am gonna have to do this to my Barracuda eventually. Larry
 
Sedan is correct. Del is a genius.it took the fabo guys a while to thump it I to my thick head, but my dash is now up and running.
Yote
 
Will do! Thanks for the lead!
I don't know why I'm so intimated by electronics.....ugh!

Jeff
 
I just got back from summit racing with some led bulbs luckily for me they aren't that far away
 
Could you give me some details on how to bench test?

Jeff

I would not use a battery charger. They are usually not filtered nor regulated. If You can test as much as you want depending on how ambitious you are. Take things "separately."

The indicator lights are easy, the high beam, left, right turn, etc, are just one connector pin, one wire, to the light bulb and ground.

All the illumination lamps are one pin and ground

The gauges you need

ground of course

12V to the ignition run pin which supplies the IVR and the gauges power

And then a test resistor to see what the gauges do, one at a time, from the sender pin to ground.

More comin..........


20j5ild.jpg


16l9sb9.jpg


9050fs.jpg


33ufqzr.jpg


i74os7.jpg


Just follow the pins in the diagram above, starting at the center "key"

The one straight up "F" is the fuel sender.

Going CW, "RT" is right turn indicator lamp

Next one is "blank" and the next one is one end of the "B" Brake indicator lamp

Next one, "O" is for the oil sender

Next one is "B" the other end of the brake indicator lamp. This gets 12V from the key at one end, and the other end goes to ground through the parking brake switch, and the wire hooks up to the brake warning switch, under the hood

Next one "L" (looks like a "V") is your dash illumination lamps

Next one "T" is temp sender

Next one is blank

Last one with the capacitor (condenser) is 12V "run" coming in to power the IVR
 
I would not use a battery charger. They are usually not filtered nor regulated. If You can test as much as you want depending on how ambitious you are. Take things "separately."

The indicator lights are easy, the high beam, left, right turn, etc, are just one connector pin, one wire, to the light bulb and ground.

All the illumination lamps are one pin and ground

The gauges you need

ground of course

12V to the ignition run pin which supplies the IVR and the gauges power

And then a test resistor to see what the gauges do, one at a time, from the sender pin to ground.

More comin..........


20j5ild.jpg


16l9sb9.jpg


9050fs.jpg


33ufqzr.jpg


i74os7.jpg


Just follow the pins in the diagram above, starting at the center "key"

The one straight up "F" is the fuel sender.

Going CW, "RT" is right turn indicator lamp

Next one is "blank" and the next one is one end of the "B" Brake indicator lamp

Next one, "O" is for the oil sender

Next one is "B" the other end of the brake indicator lamp. This gets 12V from the key at one end, and the other end goes to ground through the parking brake switch, and the wire hooks up to the brake warning switch, under the hood

Next one "L" (looks like a "V") is your dash illumination lamps

Next one "T" is temp sender

Next one is blank

Last one with the capacitor (condenser) is 12V "run" coming in to power the IVR

Absolutely awesome! Thank you!
I'm going to get started this morning!

I'll post up results and pics later.

Thanks again!

Jeff
 
LED bulbs ??? You dont happen to have that bulb number handy? I would like to try those. I think my new ones are almost burned out, they seem pretty dim, Lol.
 
LED bulbs ??? You dont happen to have that bulb number handy? I would like to try those. I think my new ones are almost burned out, they seem pretty dim, Lol.

these are what I used
 

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Thanks . If I understand correctly, LEDs are polarity specific. How does that work ? Do you have to install them, and if they don't work change them a half turn ?
Yote
 
Thanks . If I understand correctly, LEDs are polarity specific. How does that work ? Do you have to install them, and if they don't work change them a half turn ?
Yote

yes sir
 
Couple of questions:

With the LEDs and the Rallye dash, did you remove the original mounted blue bulb filters?

As far as color, green seems to be the consensus, I was thinking blue. Does anyone have a preference?
 
Couple of questions:

With the LEDs and the Rallye dash, did you remove the original mounted blue bulb filters?

As far as color, green seems to be the consensus, I was thinking blue. Does anyone have a preference?
I went with blue LEDs looks cool my dash is a house of colors green. It's what you like is what you go with.But I would definitely do what dragtop said if the dash is out put power to it ,I'll bet you'll have to fix a couple grounds
 
I went with blue LEDs looks cool my dash is a house of colors green. It's what you like is what you go with.But I would definitely do what dragtop said if the dash is out put power to it ,I'll bet you'll have to fix a couple grounds
If your using the original sockets for the bulbs the brass tabs don't like to make contact
 
Couple of questions:

With the LEDs and the Rallye dash, did you remove the original mounted blue bulb filters?
Removed diffuser globes
+ loose fit at bulb to socket
= bulb(s) rolling around in bottom of cluster.
 
I bench tested mine using a battery charger for power. Be sure to use the right circuit. Continuity tester is a great help. .
also used the battery charger to test. But ended up rewiring the whole car, didn`t want 49 yr old wiring in it. Also bought a limiter off ebay and a new sender. It works , but is slow as molasses getting there ! ???
 
also used the battery charger to test. But ended up rewiring the whole car, didn`t want 49 yr old wiring in it. Also bought a limiter off ebay and a new sender. It works , but is slow as molasses getting there ! ???
Yep, A regulator that can output nothing more than 5.4 volt and 1.5 amp once heated up, puts out a little less than that when stone cold. Does make for very slow needles, especially when running 3 instruments. No more rapid temp changes could extend the life of the gauges, in theory, not proven.
The RTE unit does mimic the mechanical limiter in rapidly heating the gauges/moving the needles at switch on.
I've got my 67 rally panel out now and I am considering a separate 7805 regulator for each of the 3 gauges. Hung up on where to put them, designing and building a home for the little devils. LOL
 
Yep, A regulator that can output nothing more than 5.4 volt and 1.5 amp once heated up, puts out a little less than that when stone cold. Does make for very slow needles, especially when running 3 instruments. No more rapid temp changes could extend the life of the gauges, in theory, not proven.
The RTE unit does mimic the mechanical limiter in rapidly heating the gauges/moving the needles at switch on.
I've got my 67 rally panel out now and I am considering a separate 7805 regulator for each of the 3 gauges. Hung up on where to put them, designing and building a home for the little devils. LOL
my fuel gauge is the ony thing that being regulated my the limiter. Don`t get too technical on me here, I`m surprised and thankful that everything works ! lol
 
my fuel gauge is the ony thing that being regulated my the limiter. Don`t get too technical on me here, I`m surprised and thankful that everything works ! lol
In that case your fuel gauge is pretty quick compared to mine. You can't imagine how slow my oil gauge needle is. One would think the filter is clogged or something LOL Happy moparing
 
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