#5 fuse location on a 74 Charger

[Wheels of Terror]

What circut does the #5 fuse location go to on a 74 Charger? It is the top right side of the fuse block. I'm not getting any power from this location. I'm hoping that it is connected to the gauges. My Rallye cluster is not working. I have checked the wiring on the back of the cluster. Everything is hooked up. This cluster is not original. I laso did not install it.

[Nacho-RT74]

On Rallye cluster, the #5 fuse feeds several cluster, sensors and buzzer funtions, like cluster brake light, interlock control and related sensors, buzzers and stuff. The power source comes directly from ignition key blue wire. Is separated from the accesories source even is on same side of fuse box. So you have power on that fuse just when you are on RUN position and also on start position but because power is getting back througth ballast, but less voltage.

The Rallye cluster source comes from accesories side of fuse box so must work even if you get back the ignition key to accesories position. Comes from fuse #6 and feeds the gauges ( oil, temp and gas ).

On Standart cluster this same #5 fuse controls all those functions AND also the CLUSTER ITSELF power. then on standart cluster and wiring, when you get back the ignition key to ACC then cluster doesn't get power.

[Wheels of Terror]

Could it be that the gauge cluster voltage regulator is bad, causing that circut not to have power? I did test the #5 circut in the run and accessory position.  Thank you Nacho!!! 

[Nacho-RT74]

Check on plug that feeds the voltage limiter. You must have 12 volts there in ACC and RUN. Thats #6 fuse.

Fuse #5 just in RUN and will light on brake light and key in and seatbelts buzzers ( seatbelt buzzer buzzes just with geared tranny ). Also "Lights on" buzzer if equipped