176810-0050 24V Wiper / Lamp Control Relay

CAT Replacement Part 155-7042 — Specialized Control Unit for Construction Machinery

I. Core Specifications

Part Number: 176810-0050 / 1768100050

Equivalent CAT Part: 155-7042 (1557042)

Equivalent DENSO Part: D519521

Voltage: 24V DC

Type: Wiper / Lamp Control Relay Assembly

Interface: 11-Pin Connector (Multi-circuit control)

Mounting: Dual-bolt fixation; designed for construction machinery electrical compartments

Operating Conditions: Vibration-resistant, dustproof, and tolerant of extreme temperatures; suitable for heavy-duty environments

II. Applicable Equipment

Excavators

CAT 320B / 320C / 320D / 320D2

311B / 311C / 312D / 315C / 318B / 318C

324E / 325B / 328D / 336E / 345C / 345D / 349D / 365B / 385B

Other Equipment

Select Loaders, Motor Graders, and Road Rollers (Harness interface verification required)

III. Key Functions and Applications

Wiper Control: Enables low-speed, high-speed, intermittent, and park/reset functions for the wiper motor

Lamp Control: Facilitates the switching (on/off) of headlights, work lights, and warning lights

Protection Features: Built-in current buffering and surge suppression to protect the control circuitry and motor

IV. Replacement and Interchangeability

Direct Replacement: 155-7042 (Genuine CAT part; dimensions, interface, and functionality are identical)

Equivalent Alternative: DENSO D519521 (Original Equipment Manufacturer [OEM] component)