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I think I've got this but thought I'd try and check. Looking at a double throw double throw switch, so dpdt, in on off on configuration.
I'm wanting to control 2 circuits with one switch. Let's call them a and b. Off = both off. On one of the ones = a and b both on. The other on = a on and b off ( as b not connected).
Am I on the right lines?
Chris
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Hi Chris,I would be thinking single switch to activate two relays,or maybe a double output relay maybe might be possible,but I'm sure someone will come along other than me that knows what they are talking about.
Change over switch ? Or a change over switch with off in the middle ??
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On off on, so kind of a changeover with off in the middle.
I've found a schematic ( that I can't download to show) which confirms what the switch will do and is what I need, with some minor modification, naturally!
I could achieve the same end with 2 separate on off switches, but where's the fun in that, and besides, the single switch functionality will be an improvement!
Chris
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You should look for an old style side/headlight switch.
Pull on = sidelights, pull further = side and headlights.
Don't think they are double pole though.
Here it is! Done gangsta style!
ChrisAttachment 63883
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Just to confuse!
Only the 2 upper bulbs will be used.
The sources on 2 and 5 will come from different places.
Terminal 1 will go to terminal 3 to the light.
Terminal 4 will be unused.
Simples! Ha!
Chris
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as bill said above, just use a headlight switch. 1st position will switch 1st circuit and 2nd position will switch 1st circuit 'and' 2nd circuit. using an on/off/on switch just adds complication. the headlight switch does it all for you.
neil.
Yep, got that thanks, and agreed on the headlight switch to a point, but I'm looking to utilise 2 separately switched sources of power also. Its a rather unusual application, somewhat experimental!
Chris
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That should cover it ...Attachment 63884
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Cheers John. Isn't that one overly complicated though? I'm looking at this one, cheaper too! Has the 6 terminals I'm looking for.
https://www.ebay.co.uk/itm/156476257...mis&media=COPY
Screenshots beyond me abilities!!
Chris
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Ah ha, power and volume! Easy enough to remember!
Chris Attachment 63885
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Simpler for sure as long as it has enough switching ability ?
Yeah, no problem there, just some led lighting, 7w I think, so about 0.6A, well within capabilities.
Chris
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red lights over the rear axle and around the engine for full on 70's night use? :whistle::lol:Quote:
Originally Posted by Happydaze
neil.
ps if it's only for light load led's what's the reason for the 2 seperate power supplies you mentioned?
:lol:
Not that far from the truth!!!!!!! [emoji28]Quote:
Originally Posted by mygasser
Here's the full explanation...... I think!
I'm messing with one of those 'f1' led units. I'm wanting a 3rd brake light and something like a rear fog light, as I'm getting a bit paranoid ( Sabbath just come on the radio, really!) in a drab green car with small rear lights, unattentive drivers etc.
If I proceed further with it this it'll be easily removable, with plug in wiring. Also, I want it switched.
Anyway, the unit has 3 wires: earth, brake light and running light.
The brake light will be wired to the 3rd brake light wiring that's currently unused. The light operates with a number if stroboscopic bursts before going on solid. Apparently uk illegal uk OK EU, go figure, and it's OK for bmw!
The running light is a brief flash every couple of seconds or so and is illegal. This would be powered from the tail lights or ignition.
I want it switched so it can be totally off, both systems on, or just brake lights. I'm imagining it would be on brake lights only unless conditions suggested taking the illegal route of fear of being rear ended being greater than the risk of being busted. Being rear ended by the coppers isn't a scenario I've considered!
My next challenge is trying to make this not look like a pile! I doubt it'll ever look great, and my in-house crew are barfing as we speak! The way I see it, if it's hideous it'll be removable with a GoPro type slide mount and a plug in, guitar or similar type plug in, so might never be seen. If that fails it'll be clip mounted to the numberplate with a plug in in the trunk.
In a test it seems suitably bright, so first objective achieved.
Pic to follow.
The existing tailights have led bulbs to replace the stock style but having seen Kev Fosters led taillights at the supernationals in the sunlight I'll be getting some of them, United Pacific. When unlit they don't look like the stickers but I can live with that.
Plan b, or is it c, is a different unit on which the running light is solid, not flashing. Assuming that's a full power illumination that would work as a fog light, and be legal. But I quite fancy the blinking light if at night on fast A roads, motorways etc, irrespective of the legality! It's all experimental!
After this I'll be looking at prop loops. More experimentation, but no electrics!
Still awake?
Chris
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Pics of test illumination, unit connected to separate 12v source, so tail lights not lit.
Attachment 63897Attachment 63898
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Could you not just mount it sideways and leave it permanent in the brake light circuit ? seems a better idea too have it permanently in use ? Dunno about the clock feature it has tho :whistle:
Mounting orientation isn't finally determined yet! If I can make it look acceptable then it'll probably be as good as permanently installed, but having it removable is little effort and cost. Ditto switching.
The numbers are a head up display of the speedo that the coppers following along can check! Good eye!
Chris
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Hi Chris
Cant decide if that's bonkers or cool ? I am edging on the cool side.. great idea
Mal
Ha! All I know is that getting hit up the rear end is probably not cool!
What got me going on this was an incident at the Preston Rumble in 2024. Things got a bit messy and we were lost, in Lancaster, for quiet a distance and time. We were followed by a couple in a convertible Mustang. We stopped somewhere and said the usual " I hope you're not following us as were lost". Much merriment and comparing notes ensued. We chatted and laughed about it later and I was then told "do you know your brake lights aren't working?" A minor oh **** moment. Checked them later and they were fine, and pretty bright too. How strange! I then thought Mr Mustang would not have realised I use the brake rarely, preferring to enjoy working the gears, and hence wouldn't be braking much, certainly compared to an automatic. But Mr Mustang was driving amongst rods and yanks and would surely realised that the lights may not necessarily be as immediately obvious as a modern car. My mind later goes into overdrive; if someone who presumably 'gets it' doesn't see 'em, what's the typical distracted driver going to see??? Watching too many bad incidents on YouTube doesn't help either. So there it is. I'm a quivering wreck, scared to leave the house! Well, not quite, but I'm keen to not to make things unnecessarily precarious, says he with his red, US style rear flashers!!
Hopefully the solution will work well, not be overly hideous in appearance, and not too annoying for those behind, well, for those that matter, I don't care about the others as long as they keep away! Well see how it works out!
Chris
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I can understand your worries. I nearly got hit up the rear when i indicated to go into the garage as all my lights were low down. I moved too the yank style pop set up which moves them too the eyeline a bit better and have a 3rd in the number plate light. Attachment 63906
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Totally Agree ChrisQuote:
Originally Posted by Happydaze
I have a very similar light set up on the rear of my 32. I thought the bulbs were really bright but after two incidents of watching people coming up too fast behind.. one even diving onto the pavement, I did the LED upgrade which are really dazzling
They are super bright now but I am thinking a rear window 3rd brake one would be a sensible upgrade
Mal
You can't have enough bright warning lights ...Attachment 63910
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Ha!Quote:
Originally Posted by jsf55
That's a good bad light!
Chris
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My word you're getting old Chris!! Where's the devil may care spirit of old ...slippery slope to BIVA!!! ;)
Well, after some messing around I got my head together, bought the bits and bobs and put it together. Had some head scratching, still have in fact got some strange issues that I won't go into, but it's working as intended! Pleased enough with the way it's turned out, and reasonably unobtrusive. Here's some pics. The lit up pic is just the brake lights in dusky light. Whilst the whole window appears to light up much of that is the relection of the sky as seen in the earlier pic.
Chris Attachment 64040Attachment 64041Attachment 64042
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Nice & bright Chris.
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Job done ...dipping rear view mirror next ?
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Funny you should mention......err.......no!Quote:
Originally Posted by jsf55
Chris
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Yeah, but the regular lights aren't so bright, even though they have led bulbs. As I think I mentioned previously the United Pacific units are 'king bright!Quote:
Originally Posted by martin
Chris
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Forgot to mention, I bought another light unit, same as the original except for the lens being smoked, for a less obvious appearance, stealthy, sort of. The pure red lens version is burn your eyes out bright!!! I preferred the lighting performance of that one but also preferred the appearance of the smoked lens. Can't have it all!Quote:
Originally Posted by martin
I did a side by side comparison, but didn't take a pic.
Chris
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another thing to consider adding is a black foam 'perimeter' to the lens where it goes against the glass. it'll stop lighting up the whole interior of the car. many factory cars do this so must be worth it as we all know they won't do anything that costs money if they don't have to.
neil.
Yeah, it may well come to that, but I hope not! I've not tested it in the dark yet. The lens is against the glass, but the glass slides down which might make sealing it up rather tricky, if it comes to that! I can switch it off independently if it became an issue, but that somewhat defeats the object of it being there!
Chris
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