wigwag setup?

If you only need 1 or 2 pieces, most semiconductor manufacturers will send "engineering samples" free of charge if you make a professional-sounding request. Most companies don't want to be bothered with the hobbyist gadget-builder market, but if they think that you are prototyping a design that you will actually be marketing, most will bend over backwards to get their chips designed into new products during the development phase(which locks in future sales for THEM).

Thats a good idea, I'll have to put my BS cap on...oh wait, i never took it off!. Nothings ever easy. dont they realize we're writing the next grammy here 

I know exactly what you are looking for. the pattern you are looking for (L/R single, simult, L/R double, simult) is the SoundOff Signal, Q-switch pattern. I have this pattern and 7 others in my camaro. My system isn't as cheap, but it is much easier than a lot of other methods I've seen posted here. My high beams flash alternating, and in the rear my backups alternate with my amber turns. Total cost in my wigwag system including relays, controllers, wire and drive relays is about $100. This can be done for much less depending on installation and control setup (not everyone needs their control switches to be remote) I've designed some pretty amazing lighting systems as well as the controls for the lighting systems (wireless remote even) in short, if you can dream it up, I can make it happen.   Most of my super custom work has been on my Tahoe PPV and my B4C Camaro. I do all levels of design, build and install. I can easily design and build a system for you to have you or a local installer finish.Chris

StreetFX

You can do it with a 4017 IC fairly cheep. Here is the basic circuit but it needs some kind of power transistor or mosfets or Relay outputs added to handle the current .

cd4017bc.pdf

Here is the Datasheet

Here is where I got the Idea.

http://www.coilgun.info/kitt_car/schematic.htm

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

Or you could always purchase a Sho-Me, Able2, Gall's, Soundoff Wig-wag flasher. You can even pick the brandname you want! That's so much simpler than designing your own wig-wag system. IMO, I'd rely more on a $40 solid-state device over my own inginuity.Daniel