Find this labels from fastman92limitAdjuster_GTASA.ini and replace. If you added more icon ids you can change whatever you want and don't forget change from Personal Vehicle.ini File too.(RADAR_ICON)
If you don't want use fastman92 limit adjuster, change RADAR_ICON= 55

; Enable radar blip sprite filename loader (0)
Enable radar blip sprite filename loader = 1

; Radar blip sprite filename loader, number of type IDs (64)
Radar blip sprite filename loader, number of type IDs = 65
