Bench testing rally gauges

4spdragtop said

I know the fuel gauge has ivr in it, I'm trying to see if that gauge and temp gauge is toast. I'm not looking to calibrate, simply looking for needle deflection. I'm using 6v lantern battery, red/positive to "I" post, but should the -ve be hooked to sender/"S" or the "A"?
Pics attached, the 3 post is fuel obviously, the 2 post is temperature.
Thanks
Steve

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Take a peak behind. If you see black nichrome winding not good! The nichrome should be nice and white colored or slight brownish. For me my fuel gauge looked very nice but temp and oil were toasty black! Thus the new gauges from Charger Specialties. Sometimes the regulator and fuel gauge look decent but! Surely some experts will reply in short order! My Opinion is replace with the modern and upgrade the VR. I will catch rath for this but JMO! I am a happy camper with factory look gauges that work!