Thank you for your response. I suspect that United Rentals might have installed a tracking device and didn't remove it before selling the forklift to me. Do you think this could be possible? As far as I know, there are no other aftermarket devices installed.

Additionally, the power cables are not just single cables; there are multiple lines for each. I'm unsure how to install a kill switch that typically only has one line for the positive (+) and one for the negative (-). Could you provide some guidance on how to approach this?

Thank you again for your help.