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That might explain it. Worth looking into as it is a cheap part. Thanks

A new gas gauge / IVR has been installed. Thought the thermostat may be stuck as well so I did replace with the same one(160F/71C Thermostat). Upper & lower rad hoses have equal heat and it does pump out warm air. I have taken the dash out several times so I consider an expert in this area...I...

Yes this is a new engine rebuild, 3 or 4 core rad upgrade with no electrical fans. Not overly concerned about the car overheating just annoying not knowing the normal operating temperature. Both upper and lower rad hoses are of equal temperature and the heater blows put warm air. I've even tried...

There was a break in the wire so I decided to cut it, directly place the wire end on the temperature sending unit and no change in the temperature reading.

Sorry Ben to bring you out of retirement and that you have answered this question many times before. As mentioned there is a new IVR gas guage, temperature sending unit and a 160F/71C Thermostat. I did however replace the electrical end piece on the temp sending unit with one that attaches to...

Temperature gauge won't go past the first mark when at normal operating temperature. Replaced with new IVR, temperature sending unit, thermostat and when grounded pegs all the way to the far right. Not sure if there is additional testing or is the gauge shot?

Where could I find either the Gas / Temperature sending push on end wire piece. Could I use the condenser wire(pic attached) which is mounted to the back of the instrument cluster? Thanks.

Last comment and that is where and thank you for your help!

Yup.....more searching and from A-Bodies help indicates IVR which is built into the gas gauge on ralleye dashes on the 67-69 Barracuda. So next question....can you buy a new assembly or send it out to get rebuilt?

So I may have over grounded my circuit board?

As per(http://www.moparmusclemagazine.com/techarticles/interior/23241_instrument_gauges_repair/viewall.html#ixzz2mkIu5Rwz) If all three gauges simultaneously jump to full/high for a few seconds and then settle back to their original readings, the problem is probably the Instrument Voltage...

I like this weather but maybe my Barracuda is a warm blooded fish? The cluster was taken fully apart in the Summer with new fuses and grounded to the dash frame. The voltage regulator maybe the problem of some of you have indicated. Thanks!

Nice sunny day to take the Barracuda for a spin, the garage temperature is 9C / 48F and outside temperature is -5C / 23F. The temperature and oil gauge goes off to the far right while the gas gauge does not make it past the E. Drove the car for an hour and everything but the gas gauge works...

Used everyones advice: checked the bulbs; incoming power from the orange wires, cleaned the bulb socket housings; bench tested the circuit board; installed dedicated ground wire from circuit board to frame; replaced bulb sockets and...... it works I have lights. Thanks again for your help...

Thank you will have a go at it on the weekend!

Maybe a good ground would be as simple as putting some screws in as I have not buttoned it up yet? Will have another look at it on the weekend. Thanks!

Thanks will give this a go!

My electrical knowledge is horrible..how do you bench test the cluster?

The instrument lights are partially working with the right side out(fuel; temperature..). The bulbs and fuses are good and the ones that are working are dim?

All together all the lights & instruments work...after 14 years it is starting to come together expecially from the help of the awesome FABO members and there input and knowledge. Cheers!

Thanks I will keep this on file...I haven't had a chance to deal with the tach at the moment.

Additional photo with cluster out and wire attached where I might think it should go?

This one?

A wire attached to an electrical balist came off and wondering where it goes? It is attached to the instrument cluster closest to the heater on/off controll.

Thanks very much!!

Okay..thanks I will have to get together with my mechanic and go over what I have and show him the schematics as it could be a missed place wire as you indicated.

Thanks for the instructions however the new board is if you have the MSD style ignition box which I don't have. I am just running the MSD distributor and coil?

The car is unfortunatley not an AC car. From what I can see there is a red wire attached to the negative terminal on the coil and a black and red attached to the positive. I will inform my mechanic NOT to hook it up and show him the schematic.

Perfect...thanks for the info!!

As I haven't touched the car in 14 years I am not sure where the tach wire is so I am sure it is not hooked up?