Abstract: A control system for a vehicle display, such as a CHMSL, includes a control system module having an OEM connector first portion pre-attached to input wires and OEM connector second portion pre-attached to output wires. In another example, a control system for a vehicle display includes a control system module having a control system module input adaptor for removably connecting the control system module to an OEM first connector portion and a control system module output adaptor for removably connecting the control system module to an OEM second connector portion. Control systems for a vehicle display can be inserted between an input system and a vehicle display without having to identify specific wire harnesses or wires, and without cutting any wires. Different adaptors can be used to insert a single disclosed control system between an input system and a vehicle display in multiple types and makes of vehicles.