Gauges pulse

[Calif240]

Hey guys... I'm banging my head...

My gauges are acting up... I've used a test light to validate pulsating voltage on both sides of the gauge studs. I've also verified I get the pulse at the sending unit. The gauges bounce or pulse with the 12v spike. They don't hold steady. When I use a resistor for the sending unit stud I still get the needles bouncing.

The cluster voltage limiter is giving 12v (or what I assume to be 12v) once approximately every second. Could my cluster limiter either be providing less voltage, or less frequently and causing the bouncing?

I feel like I'm overlooking something simple... And what's the small cylinder that plugs into the cluster Voltage limiter?

Thanks.
Terry

[Calif240]

Geez... I'm a Flipping moron. The gauges are repros since I just burnt one up. They require the constant 5v limiter from herbs... The cvsr1 model it says... Anyone know if these are carried cheaper anywhere else?

Sorry to waste everyone's time...

[70sixpkrt]

http://rt-eng.com/rte/index.php/RTE_limiter
I haven't tried this one but there $50

[Pete in NH]

You can also use a 7805 voltage regulator chip. Do an internet search on Mopar instrument voltage regulator and a bunch of information on the 7805 conversion will come up. That will give  you a constant +5 volts. Cheap and easy solution if you're handy with a soldering iron and simple electronics.

[E5 Charger]

I bought one from Premium Dash Decals, but am a long way from installing it. They are only 39.99. http://premiumdashdecals.com/6870_bbody_rallye.htm
I can't' remember if their price is Canadian or US. Our dollar sucks right now, so if Canadian you will get it even cheaper. You don't need the small cylinder when using an electronic voltage limiter. It was to suppress electronic noise for the radio with the old style limiter.

This is the reply I received asking them about the quality.

"We assemble our voltage limiters ourselves in original cans and can be installed in "3 post" gas gauges and integral limiters. They are true 5 volt solid state and do have protection circuits for over/undervoltage and overcurrent. They are not cheap 7805 chips."

[Dino]

http://rt-eng.com/rte/index.php/RTE_limiter
I haven't tried this one but there $50

I'm running one and very happy with it.  Stays cool as well.