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  1. So it seems most of the dreaded Fog Lamp threads are rather old now, 2009 or before, and as such don't capture the latest IVA changes that were made. Namely :- (From M1 Manual v9.00) Section 28 There is some vagueness introduced by the wording in RS4 and the use of "or", which can be used to imply that the fog light(s) only have to work when one of the options (dipped, main or front fog lamps) is powered on, however I believe some testers are demanding the fog lamp work in all states and it's probably a case of being overly pedantic about the wording. Either way, it is not difficult to use a pair of diodes off the dipped and main beam feeds to ensure the rear fog works in both states. My main challenge is around Note 4. Either a buzzer sounding when you turn the ignition off with the switch still activated, or you make the fog light output latched so that it automatically turns off when the sidelights are turned off, and doesn't turn back on. This is easily achieved with a latching relay *but* the relay requires a momentary button rather than a switch, which is hard to find that matches with my other switchgear. So it seems my options are to :- - Change all my switchgear to match and find a momentary fog light button that ticks the boxes (I'm a stickler for it all looking co-ordinated!) then use a latched relay fed from the sidelight circuit. - Make a buzzer. Option 2 is sounding the way forward at the moment. Or am I missing a trick? edit: Oh, and I know about the CBS module but I'll be buggered if I'm paying £36+P&P for a solution!
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