OK. Here goes ,after many weeks of intense research, the following is more info than you may want:
The original horn/fan relays were Lucas p/n 33188E but are long since obsolete. These were 3 prong relays (C1,C2,W1) and were internally grounded. The current equivalent is Lucas p/n SRB113 (33316E) which is a 4 prong (C1,C2,W1,W2) and costs about $60. An alternative is the Lucas p/n SRB111 (33302B) which is a 5 prong (2@C1,C2,W1,W2) and costs about $30. (Go figure). Cut off one of the prongs at C1 and voila , you have a SRB113.
The signal flasher is Lucas p/n SFB100 (35010) which is a screw on terminal version which matches the original equip.
The main fuse block is a Lucas model SF4 , p/n 54038067 and is a 4 fuse block with a center screw bakalite cover that most original cars have broken/discarded.
There are some cars with an auxillary fuse box , Lucas model SF5 , p/n ? , which is a 2 fuse box .
And last and most infamous , the Signal/Brake relay (the large 8 screw on connector relay), which is a Lucas DB10 and is still available.
Best source for all these parts :
www.vintagemotorspares.com
A British dealer and much cheaper than any US source.
The regulator is a Ford C6AF-10200D (original) or C5AF-10316A (alternate) and both are black with silver lettering Autolitr decal).
The starter solenoid is a Ford B6A-11450-SPP (before 3/65) or -BLK (after 3/65).
The corrrect alternator would be a Ford C5TF 10300-F.
Best source for these parts is :
www.amkproducts.com
Hope this helps.
Cheers
Greg