Need someone that's good @ electronics

Ninety-Nine SE-L · Jul 3rd, 2003, 06:05 PM

ok, despite being the "electrical genius," I'm a bit confused at what I can do with my rear tail lights (I'm working on a project).

I want to run the brakelights and the blinker to the same filament, I figured that I can make it blink opposite when the brke is on and it will be fine, here's my idea:

--------------_____________
-------------|-------------|
signal(+)----|----|||||----|
-------------|----|||||----|-----(/\/\/\/\)----Ground
brakes(+)----|----|||||----|
-------------|_____________|

if the signal is on but the brakes are off, the light will go on
if the signal is off but the brakes are on, the light will go on
if BOTH the brakes and signal is on, the light will be off
if NEITHER the brakes or signal are on, the light will be off

simplier terms:
0+0=0--------1+0=1
1+1=0--------0+1=1

it is of course 12VDC (14 to be safe).

Ninety-Nine SE-L · Jul 3rd, 2003, 06:08 PM

PS, I'll prolly be using a relay to transfer the FINAL 12V signal to the bulb.

sno · Jul 3rd, 2003, 06:19 PM

it's possible and it sounds like you're on the right track. but wouldn't you want your blinker to blink if your foot is on the brake and the turn signal is on? otherwise, if you're sittin at a light turning left with your foot on the brake then your turn signal won't blink....

Ninety-Nine SE-L · Jul 3rd, 2003, 06:23 PM

it'll still blink. See, when the brake is on, the light will blink OPPOSITE to the blinker, when the brake is off, it'll be normal.

Ninety-Nine SE-L · Jul 3rd, 2003, 06:30 PM

brake only= 1+0=1
blinker only= 0+1=1, 0+0=0, 0+1=1, 0+0=0, 0+1=1, 0+0=0, 0+1=1, 0+0=0.......
neither= 0+0=0
both= 1+1=0, 1+0=1, 1+1=0, 1+0=1, 1+1=0, 1+0=1, 1+1=0, 1+0=1.......

andre · Jul 4th, 2003, 12:05 AM

Quote:

Originally posted by 1997 GA16DE

if BOTH the brakes and signal is on, the light will be off

That's whats a little confusing there....I think thats why sno made that comment.

I did that mod...had it for a while now. All I did was get an extra set of sockets from the front turn signals (is that 1156 or 57...I forget) then wire them up to the brake lights with the second + wire. So it does exactly like you want it to....and I've had no problems with it.

For an electrical genius I think you're thinking too hard.

Ninety-Nine SE-L · Jul 4th, 2003, 12:23 AM

not exactly, it's a bit different, you need to imagine just one filament being used.

when BOTH the signal and the brakelight are illuminated, they will cancel eachother out and there will be no light from the filament. Since the signal cycles on and off, it will be a series of brakelight, canceled, brakelight, canceled, brakelight, canceled, brakelight, canceled.

simplified, I want to run 2 different positive leads to 1 light, each one (alone) can power the light, but when both are on, they need to cancel eachother out and not be able to illuminate.

andre · Jul 4th, 2003, 12:32 AM

I got ya.

Ninety-Nine SE-L · Jul 4th, 2003, 12:51 AM

here's an animation for some reference: Look at each of the 3 seperately:

andre · Jul 4th, 2003, 12:53 AM

Did you just make that?

Ninety-Nine SE-L · Jul 4th, 2003, 12:58 AM

De La Rocha · Jul 4th, 2003, 12:17 PM

Maybe have two separate power sources or run two pairs of pos/neg wire from the battery?

Dunno.

-Matt

Ninety-Nine SE-L · Jul 4th, 2003, 07:15 PM

ok, I;m now getting somewhere. I found a forum called electro-tech-online.com, they have alot of information and some really knowledgeable people. Anyway, I got a response on using a 4030 Quad exOR chip that will do exactly what I need it to. He's gonna put up a diagram, I'll keep you guys updated.