Four Seasons 35985 HVAC Relay

HVAC Relay for Isuzu and Nissan Applications

Four Seasons Relay 35985 is a standard 12-volt HVAC relay built for direct electrical control in heating and air conditioning circuits. It uses a 5-blade male terminal layout, a single connector, and a 30-amp rating to support OE-style relay replacement in select Isuzu, Nissan, and Chevrolet LUV applications.

Four Seasons Relay line components are built for straightforward electrical replacement where the original relay has failed or is no longer operating consistently. This relay meets or exceeds OEM requirements and is configured as a standard relay with a blue housing, blade terminals, and no bracket.

Key Features

• Part number 35985
• 12-volt HVAC relay
• 30-amp amperage rating
• 5 blade terminals, male connector and male terminal design
• Standard relay style with no bracket and no skirt
• Blue housing for identification
• Meets or exceeds OEM specifications

Detailed Description

Four Seasons 35985 is an HVAC relay used in climate-control electrical circuits where reliable switching is required. It is listed for select 1979-1990 Nissan 280ZX, 310, and 720 models, plus Isuzu Amigo, Impulse, Pickup, Trooper, and I-Mark applications, along with 1981-1982 Chevrolet LUV coverage. Fitment notes include OE reference 8-94235-627-0 on multiple Isuzu applications, and some listings specify 5 blade terminals for the correct electrical connection. This part cross-references Bosch 16173 for the same application.

As a Four Seasons Relay product, this unit is built as a standard replacement relay for HVAC control circuits. If you are replacing a failed relay on a Nissan 280ZX A/C control circuit, a Nissan 310 heater circuit, or an Isuzu HVAC relay application, part number 35985 provides the terminal layout and electrical rating needed for the original system design.

What It Helps Address

• Intermittent A/C compressor relay operation
• HVAC blower or control circuit switching issues
• Relay failure causing loss of heating or cooling function
• Electrical contact wear in aging climate-control systems
• OE relay replacement needs on select Isuzu and Nissan vehicles

Installation Notes and Tips

• Verify the original relay matches a 12-volt, 5-blade, male-terminal configuration before installation.
• Confirm the OE reference and connector shape against the removed part, especially on Isuzu and Nissan applications.
• Inspect the relay socket for heat damage, corrosion, or loose terminals before installing the new relay.
• Use the vehicle service information to confirm the exact HVAC circuit location on the specific model.

Quality Assurance

Four Seasons 35985 is listed as meeting or exceeding OEM requirements for the specified applications. The Four Seasons Relay line is positioned for OE-style electrical replacement in HVAC systems, with fitment coverage that includes 1979-1990 Nissan 280ZX, 310, and 720 models and select Isuzu and Chevrolet LUV applications.