I just replaced this relay; it was cutting out intermittently. In case
anyone is interested, here's the part number for a replacement: Napa Echlin
relay #AR109 ($15.49) There may be a Delco available, too. I don't know.
While I was at it I eliminated the time-delay relay that was inserted
between the blower relay and the blower on '77-'78's, and I also cleaned the
contacts on the resistor assembly. This made a MAJOR improvement in the
amount of air coming out of my heater/AC vents. "Low" now moves as much air
as "med-low" used to, "med-low" is equal to the old "medium", etc. The old
relays, together with some dirty connectors, were really degrading the
performance of the blower.
Richard ('77 Birchaven)
rguthart
anyone is interested, here's the part number for a replacement: Napa Echlin
relay #AR109 ($15.49) There may be a Delco available, too. I don't know.
While I was at it I eliminated the time-delay relay that was inserted
between the blower relay and the blower on '77-'78's, and I also cleaned the
contacts on the resistor assembly. This made a MAJOR improvement in the
amount of air coming out of my heater/AC vents. "Low" now moves as much air
as "med-low" used to, "med-low" is equal to the old "medium", etc. The old
relays, together with some dirty connectors, were really degrading the
performance of the blower.
Richard ('77 Birchaven)
rguthart
