MG Car Repair: 78 MGB Electrical Problem, fuse box, light radio

Question
I am fixing a 78 MGB for my friend. The car starts fine and runs fine....the lights work, courtesy light, radio, turn signals, .....the fuel,temp guages...wipers,fan,heater, horn, and hazard lights......do not work....the fuse box has power at the bottom two fuses....i need help...i want to return the car to my friend asap....is there a way to find this electrical ghost?  I think its a ground????

Answer
Hi Sam,
You need to trace the circuit of just one of the items that does not work. Start at the source (power supply) or the load (item that don't work) and trace with a test light all the way to the opposite end. If you don't have a diagram go to my web site and copy it.
http://mg-tri-jag.net/78-80MGB1x1.jpg   Diagram
http://mg-tri-jag.net/78-80MGB21x1.jpg   Index to diagram
Howard