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Old red has sealed beam headlights...and flash to pass...works. (If you are talking about the headlights flashing bright, when the lever is pulled back briefly and released...now, I have no idea if the foglights come on too)
Here she is sitting by her younger sister, old blacky.
[QUOTE=The Deputy;13404769]Old red has sealed beam headlights...and flash to pass...works. (If you are talking about the headlights flashing bright, when the lever is pulled back briefly and released...now, I have no idea if the foglights come on too)QUOTE]
I'm referring to flash to pass using the lights in the bumpers with headlights off. Mine is consistent with Ed's.
I'm referring to flash to pass using the lights in the bumpers with headlights off. Mine is consistent with Ed's.
Thought we might have a couple different discussion going on and that's why I thought I better clarify my findings/description again. Someone mentioned the foglights coming on earlier in the discussion, but I thought they were referring to an 87...or something. I will check both 78-84 to see if they come on while lights are off.
I kind of find it interesting that it would even be a option, if it's daylight and your driving with your headlights off...why would someone assume this would be needed to get someone elses attention in broad daylight to pass?
Anyhow...
Rob, did you guys convert the plugs when you converted the headlights to H-4's? Thought I read somewhere, here, that there is a different four terminal post connector/wiring harness for this. We need someone with a euro model 78 to step in here with some pictures and thoughts...maybe Alex would have an idea? But, he is probably busy cleaning out more space in his garage for another 928 as we speak...lol.
Also, the plug you have pictured...is what old red has, but it was flipped upside down to "work" on the H-4 headlight bulb. Now, when I say "work"...I mean...it worked for the regular dim headlight function and when you pushed the lever forward for the bright light function. But no flash to pass worked when pulling the lever backwards (towards driver), headlights or foglights with the H-4's and this style plug.
...I kind of find it interesting that it would even be a option, if it's daylight and your driving with your headlights off...why would someone assume this would be needed to get someone elses attention in broad daylight to pass?...
It's mainly a European thing. It's common to "Flash to Pass" to get the attention of the person you are coming up on. In some places it's rumored that the slower driver will actually get out of the way!
I hate to say it but I don't have a single '78 that's in my current garage and able to turn on at the moment! ( I may try #498 - it's a non-converted Euro - just for giggles and see - hopefully not start a fire as I haven't gone through it enough to be confident..) When I do I will try the 'flash to pass' and report back...
It's mainly a European thing. It's common to "Flash to Pass" to get the attention of the person you are coming up on. In some places it's rumored that the slower driver will actually get out of the way!
Brian...is loosing his mind...so please disregard any further information he may pass on.
Just checked old red (78) for flash to pass...and it does not work. I could have sworn it worked after I switched the bulbs, I remember being all happy and stuff...thinking I had fixed something without really trying. Oh well, they said stuff like this would start to happen with age.
The 84 flash to pass works as described earlier, headlights on - pull lever back - brights come on, headlights off -pull lever back - foglights come on.
Turn Signals
A) If you don't have power at the turn signal bulb sockets.
It looks like you should have intermittent (flashing) power (12V) at Plug E -terminals 5 (Left side) and 6 (Right side) on the CE panel, when turn signal or emg. flasher switch is activated. If you have power here, everything beforehand should be working correctly (turn/emg. flasher switches and flasher relay). Which I believe they are...since you have rear turn signals in working order.
If you do have power at E - 5 and 6, then you should have intermittent power at fuses, 30 - LF, 31- LR, 32 - RF, 33 - RR. If fuses are all good, you should have intermittent power at Plug N - terminals 3 (LF) and 4 (RF) for front turn signals. Rears use Plug S - terminals 3 (LR) and 4 (RR). The power for front and rear turn signals operation splits in the CE panel at the independent fuses.
If you have intermittent power to this point, there should be a plug near each turn signal housing, check for intermittent power there...if no power...look for broken wire in harness or bad connection on backside of CE panel (at related terminals).
If you have power to this point and not at the bulb socket, look for broken wire in harness between these two points.
B) If you already have power to the front turn signal bulb sockets...but still do not work.
Check both grounds located just to the right and left of the front electric fan.
Yes, doesn't look like flash to pass exists in '78 US cars- We spent some time tracing the current flow diagrams, and the circuit dead-ends at terminals M7 and M8 in the CE panel, which are empty.
We did have a victory, the A/C system had not been holding pressure, so we charged it up and tried out the new sniffer, which revealed an under-torqued connection at the expansion valve..... Some judicious tightening and 1050 g of R12 later, and we have cold air.
Also tried to understand the hazard switch. Not sure we succeeded:
You could always pull the euro driving light harness out of the front wiring (it's just tucked away inside perfectly intact and operational) and plug it into the fog lights if you really want the function. It isn't recommended though.
Otherwise there is a write up about installing a diode in between two of the relay contacts to make flash to pass operational the right way. There was a write up on this at some point. I'm sure someone can find it.
Small 928 caravan to the Palos Verdes C&C this morning. Spent most of the time trying to keep up with William- I think he's excited to have a finished car....
Totally overcast this morning so the pics are 'blah' but it was a nice jaunt anyway.
06-25-2016, 07:36 PM
Some judicious tightening and 1050 g of R12 later, and we have cold air. 
