Copies of OEM fog light mounting brackets (bolt to existing holes in stock OEM bumper)
That ebay link I posted above for the NOS lights says they have an 1157 bulb, which is a dual filament, so they'd work just like your grill mounted turn signal lights.
Another picture of the OEM Jeep Special Equipment add on turn signals.
85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT
85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO