Description
BSM Delphi R05-00 unit for Citroën and Peugeot vehicles. It may have a cracked mounting bracket on the housing which does not affect function. Unit tested and is fully functional.
Key Features
Delphi BSM R05-00 front fuse/relay control unit designed for a range of Citroën and Peugeot models. Ideal for professional mechanics and experienced DIYers looking for a direct replacement for electrical distribution and control in the engine bay. Commonly searched by product codes 9666700480, 9807028780 and 9807028880 — include these numbers when searching to find the exact match quickly.
Technical Information
- Manufacturer: Delphi
- Model: Citroën Berlingo B9; Peugeot 308; Peugeot Partner Tepee
- Product Codes: 9666700480; 9807028780; 9807028880
- Other Numbers: R05-00; R05; R05/R05-00
- Function: Engine bay fuse and relay module (BSM) controlling multiple power distribution circuits and relays for lighting, wipers, starter/ignition feeds and other vehicle systems.
- Condition Note: Housing may show a cracked mounting bracket that does not affect electrical function.
Installation Recommendations
Before replacement, disconnect the negative battery terminal to avoid short circuits and loss of vehicle data. Remove any securing screws or bolts and carefully unplug all wiring connectors — take note of connector orientation and lock tabs. Mount the unit using intact mounting points; if a bracket is cracked, secure with appropriate fasteners to prevent movement. After installation, verify all fuses and relays are correctly seated and perform a function check of lights, wipers and ignition circuits. On some vehicles, final checks or basic coding may be required to restore certain convenience functions — perform vehicle diagnostics with suitable tools if anything operates intermittently.
Most Common Cause Of Failure
BSM units typically fail due to environmental and mechanical stress. The most frequent issues are water ingress and corrosion of connector pins, thermal cycling leading to solder joint fatigue, and physical damage from vibration or impact. Symptoms include intermittent electrical faults, blown fuses, non-functional relays or complete loss of affected circuits. Preventive measures include ensuring good sealing of the engine bay, clean and dry connectors, and secure mounting to minimize vibration.
Why Choose This Unit
This Delphi BSM R05-00 offers a direct-fit solution for common Citroën and Peugeot applications, with original product codes listed for fast identification. The unit is suitable for workshops and competent home mechanics who need a reliable replacement that restores central power distribution and relay control in affected vehicles.
