These have just come into my shop on consignment. What a fascinating pair of trafficators.
You have to see the video of these to believe it. I first thought they were faulty, but they're not. It's what they were designed to do.
This is a moving trafficator. It is designed to "eddy"... to vascillate... to "wave".... to be like the Maneki-neko cats, the waving beckoning good-luck cats... a moving waving trafficator.... designed to draw attention to itself... in a novel way before flashers .
It is also ENORMOUS. Obviously for some giant army road vehicle. The arm is 350mm or 13 3/4" from tip to hinge pivot... the usual way of measuring traffs. The entire arm is well over 400mm or 16". You can see a normal one next to it for scale.
The arm is also 100% aluminium and is soft, yet light and strong. The lens is pliable. The two wires + and - run in each aluminium outer, meeting at the light in the bulbous amber tip.
It also has an optional budgie-circuit (ie it switches thru to the earth-line when the arm is physically up... a budgie is a switch that works by the physical movement of the arm... not an electrical-on). Thus you could (for example), run a positive to a dash bulb, that then runs thru the filament over to the budgie outlet. This is a negatively switched circuit, like on the old Holden door switches. If the arm is up, the light is on (as there is now an earth at the budgie terminal)... IRREGARDLESS of whether there is power to the trafficator or not. Thus the budgie (light/alarm?) tells you (a) that the arm is really up... and (b) that the bugger went back down. All independent of any trafficator turn-switch.
The mechanism is truly fascinating... unlike any other I have seen. It is a huge weighted horizontal pendulum... like those oil wells with reciprocating weighted momentum-heels. The solenoid does not hold the arm up per se. When activated it rapidly moves a piston which knocks the arm into the upper position. Here it swings from horizontal to 45 degrees up, to 50 degrees down. The piston/solenoid simply holds in. It only holds a gate that gives the piston its two extremes.
When released, it knocks the piston down and the gate closes. When in the UP position, the solenoid is not operating the arm !! The arm vacillates because of the big balancing weight on the other side of the axle. The vacillation has enought inertia (momentum? been 50 years since i did physics... forgotten) to keep going back and forth for a while... which is all that is needed. The video shows all this, although the arm would move about for longer in a real truck... as the rumbling truck bounces about... or jiggles at idle.
OK moving on to electrical... the trafficator is 6 volts and runs at about 5 to 6 amps. But don't worry... we can get round 6v, if that is annoying. The traff has an earth input, but the chassis is earth anyway. If you don't like 6 volts, then we can use my DCDC converter. These DCDC converters are 10 amps... you need 10 amps... and they have only recently become available at that output... being able to operate large current items like this. Before (and if you buy the wrong one)... they would fizzle out over 2 or 3 amps... and I especially like that they have a common negative. So the 12 volts positive supplied to the DCDC converter (from the switch) is converted to 6 volts and run to the trafficator. The earth of the 12 volt system is the SAME as the earth of the 6 volt system. This truly simplifies the whole deal and is a relatively new feature... before you had to isolate the 6v outputs from the 12 volt earth (chassis), which on a car was a pain in the arse.
I suggest you buy two, and put one on each traff. Whilst you CAN do it with one in all situations, you are just asking for trouble... (also one is a pain if you're using the free info on dual traff/flasher setup)...so much easier and simpler to make and troubleshoot, just to have one on each traff-line after the turn switch. I can also supply you with the diagrams/method to have flashers and traffs (whether or not using the inverters) off the one turn switch. Turn the switch... get the traff going up (constant 12v/6v)... and the flashers flashing (12v square wave).
You can see in photo 4, the full setup... note the trafficator is out of its shell too for a minor repair... i thought you may be interested in seeing inside. Note the 12volts being supplied by the battery (green display)... then the 6 volts being supplied to the traff (the meter display).
The DCDC converters are $75 each, down from $100. If you want to do it another way, that's fine... just don't buy them.

OVERSEAS. Overseas buyers are welcome, however, I have had problems with overseas buyers not reading the text for freight, and buying, then not replying for weeks (??!!), so I have had to alter the setup.
Firstly , all overseas freight MUST continue to be with fast reliable private express couriers, NOT the post office. Ebay has a very poor freight setup and it is quite rigid. Ebay does not understand (??) that different countries have vastly different rates for express courier. I am now making the rate TOP-DOWN... not BOTTOM-UP. Before, I charged the a very low rate on ebay , then billed for more (bottom-up). But , because overseas buyers sometimes do not reply properly, it will now be a default TOP-DOWN. You pay the maximum country rate at purchase, and THEN, I REFUND the portion for your country.
Examples. USA is the lowest, they pay the max $220, but then get a refund of about $30 to $40. UK is medium, they pay the max $220, but then get no refund. Middle East is an exception and high, they may even have to top up with more...
Be aware also, Ebay charges you a 15% fee on postage... which is included above... which I collect and pay.... a total ripoff, but that's ebay's middle name.
This is what I mean by top-down. In this way, I do not need to explain/wait for the buyer to send me more money (some have messed around for 3 weeks, which greatly disturbs me as it makes me look incompetent). I can get it going the next day... and send the refund from their paid-$220 straight after.
Post Office is strictly forbidden due to their shocking follow-up service if any problems... and they're too slow as well.