I haven't played with a 555 lately but couldn't the Discharge pin be used to provide the invert of the Output pin, allowing elimination of Q1?

 

I haven't played with a 555 lately but couldn't the Discharge pin be used to provide the invert of the Output pin, allowing elimination of Q1?

No, because the discharge pin is low at the same time as the output.

 

Another refinement eliminating two components and changing Q1 to a 2N3904.

 

@sghioto

Sorry about mispresenting the function of your circuit, I completely missed how you disabled the flasher section.

 

No, because the discharge pin is low at the same time as the output.

 

Great!

Great!

I still do this part on the 555 timer, then follow your schematic right? Except for the LEDs shown hooked up

 

Yes but without the LEDs connected as shown.
Also a good idea to connect a 10uf cap from pin8 to ground on the 555.

 

Yes but without the LEDs connected as shown.
Also a good idea to connect a 10uf cap from pin8 to ground on the 555.

Thank you

 

Yes but without the LEDs connected as shown.
Also a good idea to connect a 10uf cap from pin8 to ground on the 555.

Thank you

Just wondering, Pin 8 to ground with the 10uf cap?

 

It's known as a bypass cap and recommended by the manufacturer. Actually a 0.1uf cap is sufficient for this circuit.

 

Another refinement eliminating two components and changing Q1 to a 2N3904.
View attachment 293667

Hello sghioto,
I followed your schematic, I think I got it right, and the low beams come on at full 12v, but when I remove the low beam wires and plug in the high beam wires, the LED's blink on and off, but they do NOT alternate, they both blink at the same time and the voltage never gets to 12v it's like 3 to 6 v.

Here are YouTube links so you can see what's happening
Thank you for your help. Almost there.
https://youtube.com/shorts/nBYageLGbTQ?feature=share
https://youtube.com/shorts/nBYageLGbTQ

I didn't see your attachment till just now using a different transistor

 

Waiting to see if it works with the 2N3904 or equivalent.

 

Waiting to see if it works with the 2N3904 or equivalent.

Ok will try that. Did your test blink together and fast?

 

No. Works just like it should.
Both circuits I posted worked fine using either the 2N3906 or the 2N3904.
I prefer the last refinement using the 2N3904.

 

No. Works just like it should.
Both circuits I posted worked fine using either the 2N3906 or the 2N3904.
I prefer the last refinement using the 2N3904.

What do you see different between the two transistors 2N3906 or the 2N3904 ? I will try again. Thanks

sghioto, I am unclear on some of the connections on your latest schematic, I am not well versed in schematics, can you give me some layman explanation to my confusion? thanks

 

The transistors are the opposite of each other like the difference between a P and N channel mosfet.
Give me the link to the LED modules and the switch and I'll redraw the circuit and the wiring.

 

The transistors are the opposite of each other like the difference between a P and N channel mosfet.
Give me the link to the LED modules and the switch and I'll redraw the circuit and the wiring.

Thank you here is the Amizon link
https://www.amazon.com/your-orders/...pmentId=MB2pKmxZg&packageId=1&asin=B09S3Q872N

 

Thank you here is the Amizon link
https://www.amazon.com/your-orders/...pmentId=MB2pKmxZg&packageId=1&asin=B09S3Q872N

Switch
https://www.amazon.com/gp/aw/d/B07P2BXY8S/ref=ya_aw_od_pi?ie=UTF8&psc=1

 

The link for the LEDs is not working.

 

The link for the LEDs is not working.

try this
https://www.amazon.com/Kairiyard-Mo...ix=motor+cycle+led+fog+lights,aps,115&sr=8-10