signalsparks
Active Member
Question first: Can anyone verify whether the '68-'70 NON-Rallye gauge cluster circuit board has diodes and capacitors on it or not? IF they are normally there, what are the values on the diodes?
*Edit* I figured out this array of components must be a substitute for the voltage limiter device found on stock circuit boards. I have a new circuit board and voltage limiter on the way from Y1 now.
Background:
So I think I may have had a bit of a water puddle on my fuel sending unit, and the previous owner of my car put ALL 20A fuses in the fuse block... It smoked, then the fuel and temp gauge quit working.
I finally got the time and the good weather so I pulled my dash apart to see what was going on. Figured I blew a trace on the gauge circuit board and a little time with a soldering iron would straighten that out.
Lo and behold, the circuit board was a retrofit, screenprinting says "Charger Specialties CQ2" and it has a curious array of a couple diodes, 2-3 capacitors, and a rectifier of some sort soldered to the board behind the fuel gauge. At least one of the diodes is completely blown. I can still read the values on the caps, but no clue on the diodes. They're crispy.
Charger Specialties is out of business, assets purchased by what appears to be a Mopar junkyard in Georgia that has a perpetual busy signal on their phone and has not yet returned my email inquiry.
I noticed Classic Industries's replacement board has no such components. Could be an inaccurately assigned photo, not sure.
Any guidance would be helpful. A Mouser or Digi-key part number would be AWESOME. I could take it from there and get back on the road... I'll be changing the gauges fuse while I wait, and probably put an inline REALLY low-amperage fuse inline on both sending units.
*Edit* I figured out this array of components must be a substitute for the voltage limiter device found on stock circuit boards. I have a new circuit board and voltage limiter on the way from Y1 now.
Background:
So I think I may have had a bit of a water puddle on my fuel sending unit, and the previous owner of my car put ALL 20A fuses in the fuse block... It smoked, then the fuel and temp gauge quit working.
I finally got the time and the good weather so I pulled my dash apart to see what was going on. Figured I blew a trace on the gauge circuit board and a little time with a soldering iron would straighten that out.
Lo and behold, the circuit board was a retrofit, screenprinting says "Charger Specialties CQ2" and it has a curious array of a couple diodes, 2-3 capacitors, and a rectifier of some sort soldered to the board behind the fuel gauge. At least one of the diodes is completely blown. I can still read the values on the caps, but no clue on the diodes. They're crispy.
Charger Specialties is out of business, assets purchased by what appears to be a Mopar junkyard in Georgia that has a perpetual busy signal on their phone and has not yet returned my email inquiry.
I noticed Classic Industries's replacement board has no such components. Could be an inaccurately assigned photo, not sure.
Any guidance would be helpful. A Mouser or Digi-key part number would be AWESOME. I could take it from there and get back on the road... I'll be changing the gauges fuse while I wait, and probably put an inline REALLY low-amperage fuse inline on both sending units.
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