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I have 1971 El Camino. It's not a 10/10 restoration and it's not a race car. I just like things to work correctly. Does anyone out there know of a supplier for the factory type wire connector housings? I'm upgrading the A/C system to a newer CCOT system with R134a and I'm trying to find the correct connector housings for the somewhat different connectors that attach to the switches located in the heater-A/C dash control panel. In those years, Chevrolet only used a relay to the high speed circuit of the blower motor and ran the other three reduced speeds through the blower switch in the dash control panel. Because those reduced speeds relied on the three high-current resistors found in the evaporator case housing in the engine compartment, they were prone to high heat in the wiring circuits between the blower switch and the blower motor resistors which resulted in melted connections at the blower switch and A/C master switch. This situation is complcated and/or accelerated if your blower motor begins to wear or develops more resistance from dirt and corrosion. I'm going to add a high current relay in between the blower switch and the blower motor resistors (each speed requires its own relay). This will eliminate the high current in any of the under dash wiring. It's a lot safer and will last more than forever. Chevrolet used to publish a 'Standard Parts Catalog' where you could find these connectors but that catalog is now part of the GM parts database accessible only by dealership parts personnel.
Does anyone know where I could find the last 'printed' version of the Standard Parts Catalog? I'd be willing to scan it and return it to you or work out something to get a copy of yours. The companies that make reproduction harnesses REFUSE to sell the connector housings separately. I am making too many changes to make buying and modifying a reproduction harness worth it.
Does anyone know where I could find the last 'printed' version of the Standard Parts Catalog? I'd be willing to scan it and return it to you or work out something to get a copy of yours. The companies that make reproduction harnesses REFUSE to sell the connector housings separately. I am making too many changes to make buying and modifying a reproduction harness worth it.