JHJ 831

Thanks Mat, Really appreciated

Morning All, I wonder if anyone could help???? I am just about to pick up my beloved 1988 XJS from having a complete restoration. I want to fit an alarm system to the car that will offer remote central locking but the companies i have spoken to claim that they cannot assist due to the wiring of the car and that they would not be able to offer a compatible system. Has anyone on here fitted an alarm system that hasn't caused any issues to the car?? Any help or guidance would be greatly welcomed.