Actually, I do not. I wasn’t sure if this was related to this relay issue or with something else. But I’m not sure what else it could be since I haven’t done any change to the electrical circuit.
I actually did not know that. Good info.Bo -- You probably know this, but the toggle feature of the fog lights is to meet federal regulations as to how many lights you can have illuminated facing forward at any one time.
It is definitely part of the original wiring. HB Chris originally thought it was Hi Beams but we now know it is not.-- As Chris notes, the relay hanging where the voltage regulator had been in the older cars looks like a modification to your car based on the screw and nut used to hold it in place. My guess would be that this was done to allow for the use of a newer relay.
According to HB Chris and sfDon it is the automatic starter relay. I believe Peter C said in another thread that it needs to be "jumped" for a manual tranny car and that is probably what that wire is doing. Albeit very poorly indeed...-- If the connection to the flying relay mount in your eighth picture is function, is some type of hack fix. It is not a safe connection with this much of the connector exposed. Moreover, that type of spade connector is designed to snap into place once connected so as to prevent it slipping out of place. You would not use that type of permanent connector on a relay mount because you have to mess up the connector, and possibly the relay mount, if ever you needed to change it. And, of course, that type of relay mount is intended to be fitted into a sheet metal slot somewhere.
Right. Still a mystery wire.-- The connector with the two black wires laying loose in your last picture needs a home. It is difficult to see the connector, but it looks like one of those female connector that mates up to an opaque white connector.
Are you trying to fix something specific?
Yesterday my friend Gary and I looked into this on his '74. Sure enough, his car also has that mystery "hanging relay" dangling under the voltage regulator. (I moved it up where the reg used to be on that first photo). This is now the third '74 which has this very strange floating relay (@Sven had reported the same in July 2016). We decided to remove it to see what happened. Sure enough, that killed the high beams! So, as Chris suspected above, that is indeed the High beams even though the diagram shows the high beams going to the Fog relay. So either that diagram is not entirely correct or it is not the right one for those cars.The relay where the regulator belongs is hi beam, remove relay and see if hi beams can flash. Hi beam is white. Relay in middle is horn, unplug and test, green/yellow, brown/yellow, red, black. Forward most relay looks like A/C relay which you stated, I wonder if all 74s have one there, that’s a new one for me at least.
HB Chris' and Ohmess' descriptions are correct, (HB Chris explained it to me! ) however it might be more accurate to say that the power for the high beam runs to the fog light relay (socket). The fog light relay socket lug #85 is a tie-point for the high beam, therefore no relay is necessary in that socket for the high beam to work; the power is simply passing through the lug on its way to the high beam lights. (I have no relay in that socket, and my high beams work.)Bo -- when fog lights are installed, power for the high beam runs through the fog relay.
Interesting. I realized after going back to the beginning of the thread that you had pretty much nailed the description already.