You're right there's not much to find.
Here are the ONLY references to French use of 105's I can find.
105mm M-1950 howitzer (M101 and M101A1)
Used during the First Indochina War.
Phased out of service many years ago (probably with the introduction of the Mk F3 self-propelled 155mm gun) but four are still in service with Côte d'Ivoire.
OTO Melara Mod 56
Italian, produced 1957. Was used by French Mountain Troops.
LG1 105 mm towed howitzer
Produced by GIAT Industries (now Nexter group) of France as a private venture, specifically for the export market.
AMX-13
Export models were available with the Obusier automoteur de 105mm Modele 50 (105mm M-1950).
AMX-10RC
Reconnaissance vehicle first equipped French forces in 1981 (2nd Regiment de Hussards). Production of the first version stopped in 1994, with all versions after that being the upgraded AMX-10RC 105 TML versions.
AMX Reference
References to a French SP 105mm (in French)
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