Hooking alarm to parking lights?

[ConchZ]

Does anyone have a suggestion on where to hook the alarm system into the parking lights so that it will flash them when its triggered? The alarm I have can be spliced into the ground wire for the lights, providing a switched(on/off blinking) ground for the ground side of the parking light circuit. From looking at the wiring diagram and the dash, I think the switch for the emergency light flashers is a switch on the ground side of the parking lights. It seems to be connected to a flasher device under the dash, which then goes to the parking lights, making them flash. I think I could splice into the wiring between the switch and the flasher device.

Does anyone have any better ideas? I've saved this step for last, because I wasn't sure. It seems to me that since the emergency flasher circuit can flash the parking lights even when the car is off, that I need to tap into this circuit to get the lights to flash if the alarm is triggered.

Thanks,

Matt

[Zs-ondabrain]

Stop.....

If the alarm is putting out a Neg. signal, it's probably only a 500ma signal. Not nearly enough to flash the parking lights. Use a relay, as described in your instructions, to flash the parking lights.

If you have one of my PLH parking light upgrade harness's, tap the small wire going to the relay.

If you need to wire up a relay to convert the (-) signal to a (+) output, follow these instructions.....

Fused 12 volt wire to the 87 terminal

small wire from the 87 terminal to the 86 terminal

pin 30 to the parking lights wire (green/white)

Connect the alarms (white?) parking light flash wire to the 85 terminal.

This will turn the .5 amp output wire into a higher amp (15+) output wire. enough to flash the lights and not hurt the alarm.

[ConchZ]

Thanks for the tips. I have your headlight harness, but not your parking light one. I have a 10/73 car, which has the intermittent wipers, so I'm under the impression that your PLH won't work on my car. If it did work, I'd have bought it, based upon how much I like the HLH.

In any case, the alarm's instructions say the white wire's polarity is determined by how I hook up the red/white wire. If I hook it to a positive power source, then the white wire will be +12V, 10A max. If I hook the red/white wire to a ground, then the white wire is negative. It doesn't say, but I assume it would be 10A max? Would this be enough to flash the parking lights without hurting the alarm? If so, should I hook it to the negative side, or the positive side of the circuit? I was thinking the negative side, just because that's how the emergency flasher switch seems to work, plus its real easy to reach.

The alarm does have an orange wire and a grey wire that are both 200mA negative. They are used to trigger relays, like for the starter disable, which I already wired up.

Matt

[Zs-ondabrain]

In that case, Connect the red/white wire to a Positive supply and connect the white wire to the green/white wire on the dash side of the combo switch connector. Or connect it to the green/blue on the combo switch side of the connector. And the 10 amp flash should be more than sufficiant. It's just a flash, your not driving the circuit for a long time.

As for the PLH, I've been making the 9-pin PLH for the mid 73' to early 76' Z's for just under a year. They are the same price as the 6-pin (70' to 73') $50

Dave