Car marker light as blinker

[mainline]

I actually have a great idea. I can use a trailer wiring harness, there are three inputs (Tail/parking lights, stop lights and turn signal). These are designed to work on dimming lights with two settings. So parking light on low setting and stop on high setting. Turn signal will override the stop signal when brakes are pressed and you are turning. So ill wire the stop line input to my parking light and turning to turning light. This way the parking line on module is left empty. So the module will think i am on the brakes constantly thus leaving it on. But will flash same speed when I indicate. Seems very logical but I am not 100% sure this will work

It will not work if its going to a single lamp

You said in your first post: "I want a device that powers the marker light when the parking lights are on and blinks(in sync) when I have turn signals on. It is just 1 positive and 1 negative(so it is single colour and non-dimming)."
You didn't specify that you needed to know how it worked

I just suggested the device because it appears to do exactly what you want! ie Install a unit each side of the vehicle taking power from parking light and indicator light, and outputting to the marker light. Job done, apparently!

That device will only supply 1 amp max OP said his is around 4 amps.

 

[Avo Mk8]

That device will only supply 1 amp max OP said his is around 4 amps.

Good point, 2A each side. Though to be fair that wasn't said until after my suggestion.
2A is surely a lot for an LED marker light?

 

[mainline]

Good point, 2A each side. Though to be fair that wasn't said until after my suggestion.
2A is surely a lot for an LED marker light?

I asked if they were led he didn't say.

I pointed him to a dual circuit marker light which would suit him.

 

[Avo Mk8]

I asked if they were led he didn't say.

Bottom of post #14 Lukan6 said "they are led" but maybe I'm misunderstanding what that applied to !
Maybe he meant the ones you were suggesting were led, not the ones he had!
But it seemed to me he was answering your question!

 

[mainline]

Bottom of post #14 Lukan6 said "they are led" but maybe I'm misunderstanding what that applied to !
Maybe he meant the ones you were suggesting were led, not the ones he had!
But it seemed to me he was answering your question!

Well if his are led then one led using a few amps ?

 

[littlespark]

2x relays?

One switches on stop lights, the other switches on blinkers. The output of each would be common, and feed the marker lights.

3 relays. Left, right and stop……??

4 if you have “left” markers and “right”

Oh… now what colour are the markers? Do stop lights have to be red, and turn signals have to be amber?

 

[mainline]

2x relays?

One switches on stop lights, the other switches on blinkers. The output of each would be common, and feed the marker lights.

3 relays. Left, right and stop……??

4 if you have “left” markers and “right”

Oh… now what colour are the markers? Do stop lights have to be red, and turn signals have to be amber?

OP said "I want a device that powers the marker light when the parking lights are on and blinks(in sync)"


He only has one bulb/led in the amber marker, he wants to have the side light marker also be used as the indicator.
What you suggest won't work properly.

 

[Avo Mk8]

As above
so side lights on means marker light on
when indicating, marker light has to flash in synchronism with vehicle indicators (meaning on together, off together - legal requirement in UK, don't know about Canada)
That means when side lights are on, and indicating, the marker light has to go out in synchronism with indicators.
I haven't worked out relay logic for this, but it sounds as if it should be possible.
I suspect you may need a separate circuit for each side of the car.

 

[mainline]

As above
so side lights on means marker light on
when indicating, marker light has to flash in synchronism with vehicle indicators (meaning on together, off together - legal requirement in UK, don't know about Canada)
That means when side lights are on, and indicating, the marker light has to go out in synchronism with indicators.
I haven't worked out relay logic for this, but it sounds as if it should be possible. I wondered about using a dual coil relay!
I suspect you may need a separate circuit for each side of the car.

I gave him a simple circuit at #8

 

[littlespark]

a NC relay controlled by indicators. NO controlled by sides. Relay outputs in series.

When sides are on, markers are on.
When indicators are on, the NC relay will open, thus turning off the feed into the NO relay and turning off the marker when the indicator is on. And vice versa.

Kind of reverse synched.

Would have to be two pairs for each side.

I’m sure a third relay on each side could sort the reverse of the on-off-on synch

 

[mainline]

a NC relay controlled by indicators. NO controlled by sides. Relay outputs in series.

When sides are on, markers are on.
When indicators are on, the NC relay will open, thus turning off the feed into the NO relay and turning off the marker when the indicator is on. And vice versa.

Kind of reverse synched.

Would have to be two pairs for each side.

I’m sure a third relay on each side could sort the reverse of the on-off-on synch

You don't need all those relays.
I gave a circuit to do what the OP asked for at #8

 

[littlespark]

Yes, but as #9 didn’t say “cheers, that’ll work. Thanks” then discussion is still open.

 

[Avo Mk8]

You don't need all those relays.
I gave a circuit to do what the OP asked for at #8

Yes you did indeed, and I haven't seen any other simple alternative yet.
But the caveat is that (when the side lights are on) the indicator on to off transition has to be tweaked to match the speed of the vehicle indicator, rather than using the on to off transition to logically trigger indicator 'off'. So perhaps synchronism not 'guaranteed'?

 

[mainline]

Yes you did indeed, and I haven't seen any other simple alternative yet.
But the caveat is that (when the side lights are on) the indicator on to off transition has to be tweaked to match the speed of the vehicle indicator, rather than using the on to off transition to logically trigger indicator 'off'. So perhaps synchronism not 'guaranteed'?

Once the indicator is started the relay is latched, so the blink rate is exactly the same

 

[Avo Mk8]

Once the indicator is started the relay is latched, so the blink rate is exactly the same

Oh OK - didn't think of latching relay - thanks.