Adding a light to warning system 1995 150

[Sirrobin53]

My hearing is failing so I would like to have a light on the helm as well as the horn. Can one be added?

 

[racerone]

That would be easy to do.

 

[gm280]

Of course you can add in a light with the horn. Just parallel the light connections with the horn connections and there you go. I would go with bright LEDs instead of incandescent because the LEDs would use so little current. And then you don't need to worry about the extra current for that circuit as well. JMHO

 

[Sirrobin53]

Thanks for the replies. I agree with the BRIGHT LED'S My horn has 3 wires.+12, tan wire terminal and a black wire coming out of the potting. Which do I use to flash the light coinciding with the horn? I couldn't find any terminal that had that kind of output on the horn. My horn reads the ohms of different sensors and then sounds accordingly for oil, overheat and fuel restrictions.

 

[gm280]

Thanks for the replies. I agree with the BRIGHT LED'S My horn has 3 wires.+12, tan wire terminal and a black wire coming out of the potting. Which do I use to flash the light coinciding with the horn? I couldn't find any terminal that had that kind of output on the horn. My horn reads the ohms of different sensors and then sounds accordingly for oil, overheat and fuel restrictions.

Well if you used the +12 volt input wire and black ground wire, your light would be on all the time. So that won't work. The Tan wire is the wire that is probably coming from the engine to signal there is a problem. So that would be the wire to trigger the horn and possibly the LED light as well. I don't know how that tan wire is wired at the engine side to say for certain. If it outputs a voltage, they you're good to go, but if it goes to ground when there is a problem then you are going to need other circuitry to accomplish your idea. If you can get to the actual horn connections themselves, that is where you really want to connect to. But if that is a potted sealed unit, I'd have to see which way the tan wire goes when there is a problem to say more.

 

[Sirrobin53]

I need to put +12 on the light? The sensors sink to ground when they signal so it would complete the circuit? I wonder if it would change the ohms that the horn received giving me a false horn signal? I think I will experiment with it that way and put the sensors to ground 1 at a time to see what they do. Thanks for that suggestion. Definitely a good direction to go. I pulled the horn apart and the actual horn portion has 3 wires going to it. WAY too small for me to solder to. Also don't know if they would carry enough power to light an LED if I could solder to them. Going that route would have to use an old horn parallel with a new one. Too complicated and too much trash under the helm. I would like to have a simple and effective safe system.

 

[F_R]

You seem to be pretty smart in the electrical department, so I will admit that I don't understand how that system works. But personally, I don't think the light in parallel with the horn is going to work. The guys that replied were assuming you just have a simple horn & sensor circuit for the overheat function only.

 

[racerone]

I think it will work.

 

[gm280]

You seem to be pretty smart in the electrical department, so I will admit that I don't understand how that system works. But personally, I don't think the light in parallel with the horn is going to work. The guys that replied were assuming you just have a simple horn & sensor circuit for the overheat function only.

F_R, they make 12 volt LED indicators (Dialight Company for one) that already has the proper dropping resistor embedded in them. So paralleling the LED with the horn would work perfectly. Any time the horn blows, the LED would be lite as well. I am not saying to parallel with the wires but the actuall horn connections, i.e. the two wires that go to the horn itself, not any of the three wires that go to a circuit that goes to the horn. There is a difference. JMHO

 

[F_R]

I agree with all that. I'm just thinking along the lines where he said the horn wires are very thin and would be hard to connect to. Like I said, I'm not familiar with the system.

 

[Sirrobin53]

Check out quiet warning horn. I have it working.