BMW E31 Headlight Relay: Performance & Reliability Guide
The BMW E31’s headlight relay plays a critical role in ensuring reliable operation of high-intensity headlights, especially in vintage E31 models prized for their performance and heritage. This small but essential component acts as a switch, controlling the electrical flow to the headlights, particularly under high-demand conditions like night driving or heavy use. Without a functioning relay, headlights may flicker, dim, or fail entirely—compromising safety and authenticity.
The E31 headlight relay is typically located in the engine bay fuse box, designed to handle the high current draw of halogen or HID systems. Over time, thermal stress and electrical overload can degrade internal contacts, leading to intermittent operation or complete failure. Signs include inconsistent headlight brightness, relay hum, or complete failure when activating lights.
For optimal performance, regular inspection is key. Replacing a faulty relay prevents downtime and preserves original electrical integrity. When selecting a replacement, prioritize OEM or high-quality aftermarket parts compatible with BMW E31 wiring specs to maintain reliability and avoid compatibility risks. Proper relay function ensures not only safety but also the full aesthetic and functional value of your classic E31’s lighting system.
Conclusion: Maintaining your BMW E31 headlight relay is a simple yet vital step in preserving the vehicle’s performance and character. By understanding its function and staying proactive with maintenance, owners can enjoy reliable, authentic lighting for decades. For genuine parts and expert installation, consult a specialist in classic BMW electrical systems today.
Find many great new & used options and get the best deals for Original BMW E31 Coupe Relay Headlight Flash OE 61351392416 at the best online prices at eBay! Free shipping for many products! BMW E31 - Electrical System and Wiring Diagrams. Comprehensive technical documentation covering all E31 models (840i, 850i/Ci).
Access: The unique Integral Rear Axle (AHK) system. Schematic diagrams of all electronic control units (ECUs) and their data bus connections. Pop-up headlights and comfort control system (central locking, power windows).
Ground point locations for troubleshooting. Relay Finder Timm.2007 E64 650i Individual Sport.1999 E31 840ci Individual Sport.ex owner of 2000 E38 740.1999 E38 740i V8 M62.1998 E38 735i V8.1993 E32 730i V8.1988 E28 518i My BMW Repair YouTube Channel My Current 840ci Sport Individual My Current 650ci Sport Individual My E31 Repair and Information Website My E38 Repair and. To find a particular fuse, type F and type a search term (such as PUMP) - then press Enter.
This will highlight all relays associated with the PUMP such as fuel pump, washer pump, aux water pump etc. Click on the highlighted relay number to open the relevant page of the circuit diagram. This relay allocation list comes from various sources - unfortunately some don't agree.
1991 e31_91.pdf (11439981 bytes) e31_91.zip (8991468 bytes) 1992 e31_92.pdf (14169278 bytes) e31_92.zip (11506420 bytes) 1993 e31_93.pdf (12497488 bytes) e31_93.zip (10062349 bytes) 1994 e31_94.pdf (15897506 bytes) e31_94.zip (12859605 bytes) 1995 e31_95.pdf (20391017 bytes) e31_95.zip (16064088 bytes). Genuine 61351392416 Relay Headlight/Flash fits 1991-1997 BMW 840Ci, 850CSi, 850Ci, 850i. BMW Parts Deal offers 61.
BMW E31 Relay Module location (RM1 or A5), disassembly and recapping Jump to Latest 20K views 18 replies 10 participants last post by matthewkhalil1997 Jan 30, 2025 Opsky Discussion starter. BMW Relay Headlight-Flash - Genuine BMW 61351392416 840Ci, 850Ci, 850CSi, 850i Position 6 in the Diagram Save for later Backordered No ETA. Manufacturer Part Number: 61351392416.
BMW E31 8 SERIES Headlight/ Flash Relay. (Relay headlight/flash) suits E31 8 series models. Vehicle/Model: BMW E31 8 SERIES 840CI SPORT.
ASWR is a independent BMW dismantler / Green parts supplier based in Manchester. Free Shipping - GB Only Add To Basket Make An Offer Ask A Question SKU Code: 93995 Manufacturer Number: 61351392416 Category: www.bmw-carparts.co.uk Notes: (Relay headlight/flash) suits E31 8 series models.