The only 57 Pontiac accessory I've found that uses a relay is the "Autronic Eye" headlight control. The relay is mounted next to the defroster box on the firewall. See attached from the 57 Shop Manual, p. 14-17. See Shop Manual Section 14 for completer description. It doesn't look like it has the same connectors as in your photo.
__________________
Larry Gorden
POCI 1956 Tech Adviser
www.PontiacSafari.com
|