Here is some information I just found on another Challenger site. It gives the setup and fuse size for the fuse box. I have not had time to check out the information so let me know if any changes need to be made.
information is from:
cuda-challenger.com
Barracuda-Challenger Community
AutoInstruments.com
fuse 1 20 Amps
Brake Warning Light
oil pressure Lamp Std
Seat Belt Lamp
Seat Beli Relay
Seat Belt Buzzer
Fuse 2 20 Amps
Horn (Dual)
Horn Relay
Key In Buzzer
Fuse 3 20 Amps
Stop Lamp
Trunk Lamp
Dome Lamp
hazard Flashers ( includes)
Stop Lamp
Front Turn Signal
Turn Signal Indicators
Fuse 4 20 Amps
Map Light
Ignition Lamp
Glove Box Lamp
Lisense Lamp
Side Marker Lamps
Tail lamps
Cigar Lighter
Parking Lamps
Ignition Lamp Time Delay
Fuse 5 5 Amps
Instrument Lamps
Switch Title Lamp
Clock ( Rallye only)
Cluster Lamps
Gear Selector Lamp
Ash Receiver Lamp
Radio Lamp
Sterreo Casette Lamp
Heater or A/C Control Lamp
Fuse 6 20 Amps
Rear Defogger
Air Conditioning Clutch
Temperature Gauge
Fuel Gauge
Voltage Limiter
Oil Gauge (Rallye CLuster)
Fuse 7 20 Amps
Heater Blower Motor
Air Conditioning Blower Motor
Fuse 8 20 Amps
Radio
Backup lamps
Reverse Gear Indicator Lamp
Tachometer Feed (Rallye only)
Turn Signal (Includes)
Stop Lamp
Front Turn Signal
Turn Signal Indicators