Alarm Wiring Advise Needed

[Lil Abner]

Originally Posted by CTScott

You can use a diode to turn on the parking lights without the fogs. Cut the parking light wire. Connect the alarm parking light flash (-) wire to the harness end of the cut wire. Also connect the anode of a diode to that same point. Connect the cathode of the diode (the end with the stripe) to the connector end of the cut wire and also connect the fog light wire to that same point. The diode will allow the fogs to turn on with the headlight switch, but not with the alarm.

For the neutral safety circuit - Most remote starters turn the ignition on for a second before cranking, so theoretically you can just power it from the ignition switched power.

The diode idea, perfect solution! I will wire that up tomorrow.

As for the ignition, I don't think that will work. For some reason my starter needs the "neutral switch" grounded, which triggers a relay, allowing the ignition, then starter to kick.

[CTScott]

Originally Posted by Lil Abner

The diode idea, perfect solution! I will wire that up tomorrow.

As for the ignition, I don't think that will work. For some reason my starter needs the "neutral switch" grounded, which triggers a relay, allowing the ignition, then starter to kick.

If it samples the neutral switch first, you will to give your circuit constant power. If you are doing the switching with a transistor rather than a relay, your circuit should only draw less than 1 mA,

[Palmer812]

Yes the blue/white is only 200ma I think so you need a relay. And it is a negative trigger.

[Lil Abner]

Originally Posted by Palmer812

Yes the blue/white is only 200ma I think so you need a relay. And it is a negative trigger.

I was hoping the blue/white could have just acted as a ground, again hoping my circuit had a low enough current draw. I'll try the relay idea to see if it works. If it does, I'll plan from there. Good thing I didn't build the final circuit board.

[Lil Abner]

Originally Posted by CTScott

If it samples the neutral switch first, you will to give your circuit constant power. If you are doing the switching with a transistor rather than a relay, your circuit should only draw less than 1 mA,

I'm powering the circuit straight up with no relay. The circuit is a Quad AND gate with 4 IR receivers/emitters. The Quad AND triggers 2 optical relays, one for the neutral safety switch, the other for the clutch pedal bypass. But if I'm going to use the blue/white wire, I'll need to use a relay to power the circuit. Either that or I have a bunch of PNP and NPN transistors sitting around I could use. Total current draw on the current is unknown.