Ensure reliable signal lamp operation with the Profleet Signal Lamp Switch Assembly, a durable replacement for Freightliner CTT00001838, designed for Cascadia and M2 trucks. This electrical switch, measuring 3.0 inches x 2.0 inches x 1.5 inches, provides precise control and resists vibration in harsh conditions. Compatible with cross-references like Autmnn CTT00001838 and S-29487, it offers easy installation, making it ideal for fleet maintenance to reduce downtime and enhance safety.