Standard Ignition TS-126 Engine Cooling Fan Switch

Engine Cooling Fan Switch for Nissan Maxima

The Standard Ignition TS-126 is an engine cooling fan switch built for direct-fit service on select Nissan applications. It uses a plug-in attachment method, a rectangular female connector, and a 16mm x 1.50 thread size for a straightforward replacement on the upper radiator location.

Fits 1985-1988 Nissan Maxima, on upper radiator.

Key Features

• Standard Ignition TS-126 engine cooling fan switch
• Plug-in attachment method with included wiring harness
• 12-volt electrical design with 2 blade terminals
• Rectangular switch and connector layout
• Brass finish with plastic and metal housing materials
• Open at idle switch operation
• Thread size: 16MM x 1.50

Detailed Description

This TS-126 cooling fan switch is designed for vehicles that use a threaded radiator-mounted temperature switch to control fan operation. The unit features a female rectangular connector, male blade terminals, and a 3.5-inch harness length for a clean electrical connection. For fitment-based searches, this part is a direct replacement for 1985-1988 Nissan Maxima models located on the upper radiator. The Standard Ignition TS-126 is also cross-referenced to FS159 for the same application.

Common Issues It May Address

• Cooling fan not switching on at the proper temperature
• Fan staying on longer than expected after engine warm-up
• Intermittent radiator fan operation caused by a worn switch
• Faulty temperature-triggered fan control at the upper radiator
• Electrical connection problems at the fan switch connector

Installation Notes and Tips

Verify the thread size, connector style, and upper radiator mounting location before installation. Inspect the harness connector for corrosion or heat damage, and confirm the cooling system is full and functioning properly before replacing the switch. Because this is a plug-in style component, make sure the connector seats fully and the terminals are clean for reliable contact. Fits 1985-1988 Nissan Maxima, on upper radiator.

Quality Assurance

Standard Ignition replacement electrical parts are built for service applications that require accurate fitment and dependable connector compatibility. Confirm the part number TS-126 against the original switch and vehicle application before installation.