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Title: 1972 Raylle Tach not Working
Post by: tmirisola on February 02, 2020, 07:28:35 AM

I have a 72 Challenger with the Raylle Factory Instrument Cluster. My Tach does not work. Where should I start looking/troubleshooting???

Thank You

Title: Re: 1972 Raylle Tach not Working
Post by: MEK-Dangerous on February 02, 2020, 09:16:34 AM

It's common to have to get them rebuilt. There are only 3 things it needs. Power, ground, and a signal from the "+" side of the ignition coil. It gets it's ground connection from the dash frame, so I wouldn't suspect that.

Title: Re: 1972 Raylle Tach not Working
Post by: JS29 on February 02, 2020, 10:02:00 AM

I think the tachometer gets the signal from the negative side of the coil. :alan2cents:

Title: Re: 1972 Raylle Tach not Working
Post by: MEK-Dangerous on February 02, 2020, 11:26:19 AM

Quote from: JS29 on February 02, 2020, 10:02:00 AM
I think the tachometer gets the signal from the negative side of the coil. :alan2cents:

Yeah, I just came back to edit my brain fart. Thanks for catching that so soon.

Title: Re: 1972 Raylle Tach not Working
Post by: tmirisola on February 02, 2020, 11:56:22 AM

OK, Where can I get the Tach rebuilt????

Title: Re: 1972 Raylle Tach not Working
Post by: JS29 on February 02, 2020, 01:30:29 PM

Quote from: tmirisola on February 02, 2020, 11:56:22 AM
OK, Where can I get the Tach rebuilt????

@HEMICUDA (https://forum.e-bodies.org/mlist/hemicuda_27) would probably know who would be your best bet.

Title: Re: 1972 Raylle Tach not Working
Post by: Chryco Psycho on February 02, 2020, 08:45:14 PM

DO it yourself , RTE sells the kit easy to install , you need the calibration tool though to make it accurate

Title: Re: 1972 Raylle Tach not Working
Post by: usraptor on February 03, 2020, 09:12:51 AM

I upgraded mine with the RTE kit and did the calibration. It works, but is very slow to register the increase in RPMs. I have to shift long before it gets to 5K RPM. :dunno: :huh:

Title: Re: 1972 Raylle Tach not Working
Post by: MEK-Dangerous on February 03, 2020, 01:07:34 PM

I was lazy and sent mine out for rebuild.

http://www.performancecargraphics.com/Dash_Stuff/Restoration/70-74_E-body_Rallye.htm

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E-Bodies Cuda & Challenger (sponsor: ROSEVILLE MOPARTS) => Cuda & Challenger General Discussion (ROSEVILLE MOPARTS) => Topic started by: tmirisola on February 02, 2020, 07:28:35 AM