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In the 98 fsm, it seems that fogs are not restricted to low beam only, but it does seem the fog light switch also turns on the tail lights. I had a euro spec Mercedes 280TE gas wagon that had one fog tail light and one reverse light, fog light came on with the front fogs, and those fogs only worked in low beam. I had the euro spec headlights, though, reinstalled after the grey market inspection, and you didn't need any additional high beam illumination with those big old H4 bulbs...


I'll have to look at it again. I think it shares the same power as the the taillight relay, but I am not aware of any rear fog mode. I'd like to add a rear fog light or two, it gets foggy in Florida more than you'd expect.

2000 Mitsubishi Montero Endeavor, "Katsumi", 138k
1993 Toyota Tercel, backup vehicle, 93k
1989 Isuzu Trooper, "Beniko", R.I.P. at 233k

My 'Genuine Isuzu Parts' decals - for sale