wrote:

well I have a semi truck and a light bar with 12 marker lights in the
bumper I am going to wire them 6 and 6 so when I turn on the turn
signal they flash the right way 6 will flash right and 6 will flash
left I would like to go further and make them flash in a seires
1,2,3,4,5,6, how do I do this. what relays do i need and or anything
eles I would like them to start to flash in the center at number 6 and
flash one at a time down to 1 and work there way to the out side of
the bar so it would be 1,2,3,4,5,6 6,5,4,3,2,1,and start over again.

left side right side


Something with that many options would be easiest done with a micro
processor and a dozen solid state relays.

Otherwise, it's gonna get ugly with a bunch of TTL or CMOS LSI chips.

SCR's won't work for the switching because it's DC powered. Once turned
on, they won't go off until voltage crosses zero.

I think we're going to have to call in an expert.


Hey, JIM????