Windshield Wiper Motor 5-Wire System: Functions and Working Logic
The 5 wires of a wiper motor typically include: Constant Power Wire (Live wire) Ground Wire High-Speed Terminal Wire Low-Speed Terminal Wire Parking Position Wire
LEILI
Hower Yang
6/12/20251 min read
Windshield Wiper Motor 5-Wire System: Functions and Working Logic
Comprehensive Analysis of 5-Wire Wiper Motor Functions
Intermittent Wire: Controlled by the intermittent relay to enable periodic wiping cycles (e.g., every 6 seconds). Ideal for light rain conditions.
Low-Speed Wire: Connects to the switch to activate slow wiper operation. Suitable for moderate rain or regular cleaning.
High-Speed Wire: Connects to the switch to trigger rapid wiper movement. Used during heavy rain or for quick water clearance.
Ground Wire: Provides circuit grounding through the switch to ensure proper current flow.
Parking Wire: Directly connected to negative terminal. Ensures automatic return to resting position when wipers are turned off. Other four wires are switch-controlled.
Operational Logic Explained
Parking Wire Special Behavior: Becomes grounded ONLY when wipers are switched off while not in home position. All other states are switch-controlled.
Intermittent-Low Speed Relationship: The intermittent relay achieves pulsed operation by modulating the low-speed circuit, not through independent functionality.
