Color coded wiring diagram for my 1974 MGB.
To make the process of checking the wiring system easier. I scanned a black and white wiring diagram, and color coded it. This color coded diagram is for 1973-74 MGB export (US) models.

Photo of the fuse panel in my MGB.
When I was inspecting the electrical system.  I discovered that some of the connectors on fuse panel were in the wrong location. See number 19 in the wiring diagram for the correct connections.