HOWO Electrical Junction Box Assembly WG9716580021 (Fuse & Relay Box)

The WG9716580021 electrical junction box assembly is the fuse and relay power distribution centre for SINOTRUK HOWO heavy trucks. It houses the vehicle’s fuses and relays and manages current distribution, logic control and overload/short-circuit protection for high-power circuits.

– OEM No.: WG9716580021 (works with CBCU central control unit WG9716580023)
– Application: SINOTRUK HOWO / HOWO A7 series heavy trucks
– Terminal groups: Terminal 30 (constant battery power) and Terminal 15 (ignition-controlled) circuits
– Circuits supplied: engine ECU, ABS, pneumatic solenoid valves, wiper motor, A/C blower, headlights, fog lights and tail lights
– Dimensions: approx. 395 × 210 × 80 mm, weight approx. 2 kg

Common failure signs: scorched or melted fuse slots, chaotic electrical behaviour, random fault codes, relays clicking continuously, or multiple dashboard alarms with no power at the end device — usually caused by water ingress at the rear connectors or vibration-induced board damage.

Complete assembly, factory batch-marked with QR label, direct plug-and-play replacement. 12-month warranty and in stock for worldwide shipping. Request a quote for the best export price.