Description
When electrical gremlins start acting up on your tractor—lights flickering, accessories cutting out, or systems not engaging when you flip the switch—there’s a good chance one of your relays has given up the ghost. This 4-pin blue relay handles the switching duties for various electrical systems, taking the load off your switches and keeping everything running reliably. No more jiggling switches or wondering if your equipment will work when you need it most.
What You’re Getting
- Heavy-duty contacts that handle high electrical currents without burning or sticking
- Weather-resistant housing protects internal components from moisture and contamination
- Quality construction withstands vibration and temperature extremes
- 4-pin configuration provides reliable switching for multiple electrical circuits
- Critical pin configuration—don’t try to make a 3-pin or 5-pin switch work
Built for Real Farm Work
This relay serves Case IH Maxxum, MXM, and Puma series tractors, along with New Holland T7 and TM series models—advanced agricultural tractors that feature sophisticated electrical systems for demanding field operations including cultivation, planting, harvesting, and loader work. The relay ensures consistent operation regardless of conditions, from cold morning starts to rapid cycles during busy field days.
Made to Last
Engineered to original equipment specifications, this relay provides dependable electrical system operation while protecting components from damage. The internal switching mechanism uses quality components that resist wear and electrical failure, with contacts designed to handle current loads without burning out or creating poor connections.
Installation Notes
Always disconnect your battery first—relay circuits carry serious current. The relay typically mounts in the main fuse box or electrical panel. Match your wire positions carefully to the old relay—taking a quick photo before disconnecting saves headaches. Test the system operation before heading back to the field to make sure everything’s working properly.






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