This Air Brake Service Circuit Stop Light Switch SL-4 turns on the red brake lights on the the vehicle rear lights when the brakes are applied. Brake light serve to alert other drivers behind you that you’re stopping, backing up, or slowing down. When driver applies the brake pedal, the lever arm attached to the pedal pushes a plunger inside the brake light switch. It completes an electrical circuit causing the rear brake lights to turn on. The Air Brake Service Circuit Stop Light Switch consists of silver contacts and snap action design to increase switch life and it is tested at one million cycles at 30 AMPS.
Please verify fit with the OEM Part number interchanges list below.
This part interchanges with the following part numbers: S-21905, 13250, 505026C1, 505026C1, 228687N, 228687, BE13250, 1MR2328R, 3250, 873706R91
Part Interchanges listing means that this valve is a suitable replacement for the part numbers listed above.