Tony B Posted December 19, 2012 Share Posted December 19, 2012 I understnd that is was a way to dip lights. Can anyone tell me how it worked? Quote Link to comment Share on other sites More sharing options...
0 Richard Farrant Posted December 19, 2012 Share Posted December 19, 2012 British armour before WW2 had two independant tail lamps, one red and the other blue. I have never found out the reason why, pehaps this is what Tony is refering too ? :undecided: Quote Link to comment Share on other sites More sharing options...
0 Pete Ashby Posted December 19, 2012 Share Posted December 19, 2012 British armour before WW2 had two independant tail lamps, one red and the other blue. I have never found out the reason why, pehaps this is what Tony is refering too ? :undecided: Not sure about pass lamps, was it a night time version of the pass plate system that was in use on British and Canadian trucks up until about 1942 ? Pete Quote Link to comment Share on other sites More sharing options...
0 Tony B Posted December 20, 2012 Author Share Posted December 20, 2012 That's the problem guys! I don't know!:red: Phil has ordered a new harness for his Wolsley and one spec had wire for a Pass Lamp system. Quote Link to comment Share on other sites More sharing options...
0 Pete Ashby Posted December 20, 2012 Share Posted December 20, 2012 That's the problem guys! I don't know!:red: Phil has ordered a new harness for his Wolsley and one spec had wire for a Pass Lamp system. Ah, was that for the front harness to the head lights ?, there were several systems in use in the twenties and thirties for anti-dazel devices some had solenoid operated tipping lenses others I believe actually turned out the bulb while still others activated a very low wattage second bulb an early form of modern twin filament I suppose. I would need to hunt around in my pre war reference books to be more precise but I assume the Wolsley you have will be standard dip twin filament pre-focus? Pete Quote Link to comment Share on other sites More sharing options...
0 Pete Ashby Posted December 20, 2012 Share Posted December 20, 2012 Tony Just checked and both the Wolsley 10 and 12 were fitted with a solenoid operated dip head light on the drivers side so if it's the front loom we are taking about I guess that may well be the power feed for the solenoid. Pete Quote Link to comment Share on other sites More sharing options...
0 Tony B Posted December 20, 2012 Author Share Posted December 20, 2012 Thank you Pete! I'll pas sthe info on. The dip switch is flor mounted, but we have not (So fsr) had it apart! Quote Link to comment Share on other sites More sharing options...
0 Pete Ashby Posted December 20, 2012 Share Posted December 20, 2012 Your welcome Tony, looking at the wiring diagram it appears that the dip switch activates a solenoid located in the head lamp unit with tips the reflector down. regards Pete Quote Link to comment Share on other sites More sharing options...
0 Tony B Posted December 20, 2012 Author Share Posted December 20, 2012 OK now the pricipal is totally clear! Will check if it may have been converted to two filament dip. Quote Link to comment Share on other sites More sharing options...
0 Lauren Child Posted December 20, 2012 Share Posted December 20, 2012 I've just taken a look in The Manual of Military Vehicles (I.C. Engined) and Tank Training Vol.1 (Training) both from 1930, and there doesn't appear to be any mention of pass lamps. Quote Link to comment Share on other sites More sharing options...
0 Richard Farrant Posted December 20, 2012 Share Posted December 20, 2012 Tony, I have cracked your coded message! Nothing to do with military use at all. I have an old book of my fathers called Practical Automobile Engineering (1945), it comes in handy occasionally, like now, it has some wiring diagrams, one for a Wolesley 14hp. The Pass light is not a headlight it is smaller lamp on the nearside (opposite to the front fog light) lower and inboard of headlights. When you operate the foot switch (called Passlight foot switch), it switches off both headlamps and turns on passlight and vice versa. I seem to recollect this idea was for overtaking, or to indicate you were doing so. Quote Link to comment Share on other sites More sharing options...
0 Tony B Posted December 20, 2012 Author Share Posted December 20, 2012 (edited) May need to be a bit careful on definition here. I assumed Pass, meant back to front ie Overtake. But it also appears to dip the main beams, as approaching a vehicle. Oh, yes, PM delivery adress for consultants fee! Got the tea bags! Edited December 20, 2012 by Tony B Quote Link to comment Share on other sites More sharing options...
0 Richard Farrant Posted December 20, 2012 Share Posted December 20, 2012 Tony, to add, the headlamps on my diagram are single filament no dipping arrangement. Quote Link to comment Share on other sites More sharing options...
0 Tony B Posted December 20, 2012 Author Share Posted December 20, 2012 Thanlks for that. Now need to check the actual vehicle and see what is there. Though the trafficators still work! :-D There is an odd hole on the bar behind the bumper which may have been the light. Don't have an ilusstration by any chance? Quote Link to comment Share on other sites More sharing options...
0 Richard Farrant Posted December 20, 2012 Share Posted December 20, 2012 Thanlks for that. Now need to check the actual vehicle and see what is there. Though the trafficators still work! :-D There is an odd hole on the bar behind the bumper which may have been the light. Don't have an ilusstration by any chance? Don't you have a wiring diagram? I will see if I can copy it later if you have not got one. That will be another packet of Hob Nobs you owe me :cool2: Quote Link to comment Share on other sites More sharing options...
0 Tony B Posted December 20, 2012 Author Share Posted December 20, 2012 God the expense!! :wow: I know Phil has various manuals, but just like modern times you can have the extra toys! The wiring has been 'repaired' over the years and is frankly a right cats cradle. Hence a new harness. The idea is to take the vehicle to Normandy and touring around, and it is a nice vehicle to drive on modern roads. So Safe and reliable will be order of the day. Quote Link to comment Share on other sites More sharing options...
0 Richard Farrant Posted December 20, 2012 Share Posted December 20, 2012 Tony, Two scans of wiring diagram which will explain Pass lamp. Quote Link to comment Share on other sites More sharing options...
0 Tony B Posted December 21, 2012 Author Share Posted December 21, 2012 Thanks Richard. Quote Link to comment Share on other sites More sharing options...
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Tony B
I understnd that is was a way to dip lights. Can anyone tell me how it worked?
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