Dorman 645-509 blower motor resistor connector for the 1995-2005 Chevrolet Blazer and other vehicles replaces a connector damaged by corrosion or overheating. This Dorman hvac blower motor resistor connector is sold as a 4-wire harness.
- Direct-fit replacement, supplied as a complete connector assembly
- Corrosion-resistant terminals made of phosphor bronze (tin plate)
- Engineered to impede corrosion and heat damage
- Pre-assembled wiring harness/pigtail with the connector terminal
- Replaces the connector alone, not the entire wiring harness
A blower that cuts out or works on only some speeds, or a connector that looks burnt or corroded, can mean the connector is damaged. None of these signs proves the connector is at fault, since a failing blower motor resistor can produce similar symptoms.
The 1995-2005 Chevrolet Blazer takes one. This direct-fit connector also suits the 1994-2004 Chevrolet S10 and 1994-2004 GMC Sonoma. If your vehicle is not named here, look it up in the "Vehicles it fits" section, where the other vehicles are listed.
Specifications
Fit and size
- Quantity per vehicle: 1
- Overall length: 15.75 in
- Wire quantity: 4
- Wire gauge: 16
Build and materials
- Terminal type: blade
- Terminal gender: female
- Terminal material: phosphor bronze (tin plate)
- Country of origin: China
In the box
4-wire harness.
Interchange: S-1615
PT391 · 1P1499 · PT1113 · EC1112 · 12102762 · 867
This part cross-references / interchanges with the following part numbers:
PT391, 1P1499, PT1113, EC1112, 12102762, S-1615, 867
Frequently Asked Questions
Does the Dorman 645-509 fit a 1995-2005 Chevrolet Blazer?
Yes, Dorman 645-509 fits the 1995-2005 Chevrolet Blazer, with one connector per vehicle. For any other vehicle, look it up in the "Vehicles it fits" section.
What comes with the Dorman blower motor resistor connector?
Dorman 645-509 comes as a 4-wire harness: a pre-assembled pigtail with the connector terminal. A blower motor resistor itself is not part of this listing.
What wires and terminals does this blower motor resistor connector have?
This connector has four 16-gauge wires ending in female blade terminals made of phosphor bronze (tin plate). Overall length is 15.75 in.
How can I tell if my blower motor resistor connector is damaged?
Burn marks or corrosion on the connector point to heat or corrosion damage. Look with the ignition off, and have a shop test the circuit if the blower still cuts out.
Does Dorman 645-509 interchange with S-1615?
Yes, S-1615 is one of the numbers Dorman 645-509 replaces, along with PT391 and 1P1499.
