Oil pressure gauge and brake light

[legolen]

I just finished reinstalling my dash after pulling it out to spruce it up a bit in my 73 Charger. Everything still works the way it should except the brake light and the oil pressure gauge. I have the Rallye gauge cluster where the oil pressure gauge is in the same opening as the fuel gauge.

The pressure gauge goes all the way to high or low.
The brake light flickers.

Any ideas on what might be the issue? Is it possible I switched the wires in the back of the instrument cluster for these? If so does anyone have a diagram or details on what I should look for to get them plugged into the correct spots?

Thanks!!

[Nacho-RT74]

brake light:

it gets constant 12v positive from RUN circuit, and is activated by ground either from emergency brake pedal switch &/or brake fluid dist block by brake fluid pressure failure. Beging disconecting the dist block on engine bay to check if it changes ( being steady off ), and apply emergency brake pedal to check if gets steady on.

Oil gauge: Same as the brake light it gets "constant" positive from ACC source ( either in ACC or RUN ), but from Voltage limiter ( 5 volts P to P ) and the ground variation sent by sender. Assuming the rest of gauges are in working order and working good, this points out to a gauge failure, bad contact on Back of gauge or failure at sender or related wire. Ground the wire running to sender to check if gets fixed at max reading. If so, the sender could need a replacement.

all Rallye clusters gets oil and gas on same opening, the diff is some are on the big one at a side of the speedo, and others on the first small opening above the radio.

Housing got labeled the Violet ( temp ), Blue ( gas ) and Gray ( oil ) studs for these functions. Then the VL spreads out a black wire pigtail to the other unlabeled studs on each gauge. They can be conected in either way and will work the same, but of course just for order, better to make it correctly.

on this pic, is the one with the gas/oil on big opening. The gray, blue, red, violet marks without studs ( but the sealed round circle ) are casted there for the versions with clock/tach. But you get the idea

[Nacho-RT74]

here the version ready for clock/tack... where you can see what holes were opened for the respective gauges. Diff ones of course