Usually the relay cases display the circuit of what's inside the case. If in fact the displayed circuit doesn't show a symbol for the diode, it's probably not there. Every relay that I've seen that has the diode shows it in the circuit diagram.
89 Milano (wife's daily driver since 1989)
91 164S (my daily driver since 1994)
94 164LS (~Q) (trip Alfa since 2000)
72 Morgan 27 (water time since 1976)
previously owned since 1964:
62 Morris MiniMinor 850, 67 Austin 1275 Cooper S (Downton 3/4 race), 64 Giulia Sprint GT (1st red one made), 72 Fiat 128 Sedan, 75 Alfetta Sedan, 78 Alfetta Sedan, 78 GTV, 81 GTV6, 86 GTV6
Last edited by Del; 02-18-2009 at 12:41 PM.