HVAC Switch Connector (85150) by Dorman®. Location: To Blower Motor. Type: Blade Female Terminal. Wire Quantity: 5. Overall Length: 7″. Improved wiring and highly durable insulation resist the corrosion, overheating and melting that commonly afflict the turn signal and other sockets. Easy to install, Dorman’s Heater Switch Connector regenerates the signal. Even better: it lasts.