mach1 Posted December 25, 2016 Share Posted December 25, 2016 Can anyone identify what this relay is for next to the ID plate in engine bay. I thought it was for the air con but not sure. Thanks Felix Link to comment Share on other sites More sharing options...
RivNut Posted December 25, 2016 Share Posted December 25, 2016 Year? Link to comment Share on other sites More sharing options...
mach1 Posted December 25, 2016 Author Share Posted December 25, 2016 1968 riviera Link to comment Share on other sites More sharing options...
rivgs Posted December 25, 2016 Share Posted December 25, 2016 I checked my 68 shop manual and it doesn't show any relays there. If it was a 67, it would be for the headlight motor control. Does your car have the vacumn pods to make the headlights go up and down or has it been converted to an electric motor? Is your car left hand drive or converted to right hand drive? Link to comment Share on other sites More sharing options...
mach1 Posted December 25, 2016 Author Share Posted December 25, 2016 (edited) car is l/h drive and it has the vacuum pods Edited December 25, 2016 by mach1 (see edit history) Link to comment Share on other sites More sharing options...
PWB Posted December 25, 2016 Share Posted December 25, 2016 3 hours ago, mach1 said: Can anyone identify what this relay is for next to the ID plate in engine bay. I thought it was for the air con but not sure. Thanks Felix HVAC Relay ACDelco C1700C About $30. US. These fail often. Check your terminals for tightness and arcing. Old ones can melt your wiring! Link to comment Share on other sites More sharing options...
JZRIV Posted December 26, 2016 Share Posted December 26, 2016 (edited) A/C high blower relay I believe. Edited December 26, 2016 by JZRIV (see edit history) Link to comment Share on other sites More sharing options...
1965rivgs Posted December 26, 2016 Share Posted December 26, 2016 18 hours ago, mach1 said: Can anyone identify what this relay is for next to the ID plate in engine bay. I thought it was for the air con but not sure. Thanks Felix What is written on the top of the relay?? Tom Link to comment Share on other sites More sharing options...
mach1 Posted December 26, 2016 Author Share Posted December 26, 2016 I wrote air con on it,but I was not sure that is correct Link to comment Share on other sites More sharing options...
RivNut Posted December 26, 2016 Share Posted December 26, 2016 Looks like it's time to start tracing those wires back to their origins. Best way to tell for sure. Link to comment Share on other sites More sharing options...
68RIVGS Posted December 28, 2016 Share Posted December 28, 2016 Pretty sure it may have been placed there by a previous owner or a mechanic - just trace the wires, and see where the go to? It doesn't appear on the '68 wiring schematic, so it may have been Magivered ? It does look like a blower motor relay that Jason mentioned, but that should be located on the other side of the car. Link to comment Share on other sites More sharing options...
PWB Posted December 28, 2016 Share Posted December 28, 2016 On 12/25/2016 at 6:58 PM, PWB said: HVAC Relay ACDelco C1700C About $30. US. These fail often. Check your terminals for tightness and arcing. Old ones can melt your wiring! WTW??? Compare the MACH1 1968 image with my 1967 image. They are exactly the same. Even the '67 wash hose hole carried over to '68 which is no longer used. Mid year change??? Link to comment Share on other sites More sharing options...
68RIVGS Posted December 29, 2016 Share Posted December 29, 2016 Paul you are absolutely spot on, good " i " !! Link to comment Share on other sites More sharing options...
PWB Posted December 29, 2016 Share Posted December 29, 2016 1 hour ago, 68RIVGS said: Paul you are absolutely spot on, good " i " !! Now the Q is why the relay move: economy and/or efficiency? Link to comment Share on other sites More sharing options...
68RIVGS Posted December 29, 2016 Share Posted December 29, 2016 Good Q Paul - I do know it was mounted on the left hand side on AC Buicks in the late '70s. Link to comment Share on other sites More sharing options...
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