hey guys, me again, you probably dont remember but at the end of the summer i was having some electrical issues with my 67 dart gt, i replaced the ignition switch, i think it is something on the back on the gauge cluster, i was reading about it before, but i forget what it was called and if it was relative to my year, ive got power on the inside of the firewall but i think not much further, any suggestions? man, this nice weather has me missing my dart, hoping to maybe get some progress done over spring break so i can drive it this summer as soon as i get out of school, man i miss everything about it except the difference in mileage between that (supersixed) and my school car (4 banger/5spd) sorry im not as specific as id like to be on the problem

Hi,Ttry the plugs where your wiring harness goes through the fire wall to make sure th contact areclean and not corroded. Sometimes just unplugging and plugging them back in will work, if it does they definitly need some attention. Hope tjis helps

the wires have power, its something past that, thanks though!

Are you talking about the instrument panel voltage regulator? That's on the back of the gauge cluster, and if it dies, the gauges may burn our or will simply not work depending on how it failed. This does not affect anything else beyond the gauges. It is possible for a dead ammeter to kill electrical power, however.

_________________
"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

Voltage limiter?

is the regulator the same as the limiter? thanks

If it is a gauge problem, then it is probably the 5 volt regulator. Fortunately, 40 years later we now have electronics that are much better than the mechanical voltage limiters (one and the same, just different nomenclature). The modern version is a board mount 3 prong electronic MOSFET-looking critter that is constant output; versus pulsing output of the stock mechanical regulator. Gauges increase in accuracy and lifespan. I think the part you want is a 4105. I know the "05" part of the number equates to 5 VDC. A 12 volt regulator would be a 4112, etc. The Radio Shack versions have the wiring schematic on the back. One prong to voltage in (key-on voltage), one goes to ground, and the third will give you your 5 volts.

Mike

_________________
Recognized by US Federal Courts as a Fuel Economy Expert!

5v regulator is 7805 3 lead TO220 case
12v 7812

Radio shack has them.

http://www.radioshack.com/product/index ... 2062599&cp

Add a heat sink

http://www.radioshack.com/product/index ... 2102856&cp

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

that regulator is on the back of the gauge cluster? thanks guys

7805's need 10uF or more on the input to prevent oscillations, and won't have the same terminals as whatever it is replacing. Basically--it's not a drop-in solution. A good one, but not plug-and-play.

huh?
i dont follow that sorry, i can do the plugs or whatever, i just dont understand how to get the 10uf or what that means really, is there an article somewhere about this?
http://www.slantsix.org/articles/instru ... cation.htm found this, is this the same thing? is this fix a swap for the regulator on the firewall or is there two regulators? i think maybe it was the ammeter, that sounds right now that i think about it, its not really the gauges that are the problem, i replaced the ignition switch this summer as well

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

That's a pretty good writeup. While I'd take issue with the usage and placement of the capacitor, if it works, it works. I would recommend using at least a 25V capacitor; automotive electrical is quite dirty (noise spikes).

http://imageevent.com/jeffc/techstuff2e ... =4&s=0&z=2
http://imageevent.com/jeffc/techstuff2e ... =4&s=0&z=2
Give this a try, makes a lot less heat and if you put spades on the
wire ends it will plug right in.

_________________
http://imageevent.com/jeffc
62 D100 225 3sp lwb
64 D100 A318 727pb custom lwb
66 D100 A318 4sp lwb
68 D100 B383 727 swb
65 Belveder A318 727 4d
65 Dart GT LA273 2bbl 904
73 Scamp 225 2bbl 4spOD
Old iron or no iron

Wouldn't a 7809 or 7810 split the voltage drop better with the 7805 since you're running closer to 14v than 12v? (4 and 5 volts each compared to 3 and 6 volts)


And how many amps do the gauges need anyway?

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes