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Discussion Starter #1
I wired a 20/30 amp 5 prong relay in as follows:

Cut the wire from iginition (to starter) & wired the iginition end to 30 & the starter end to 87a

From the Ungo alarm there is a 500ma negative trigger when active which is wired to position 85

Position 86 has 12v+ from the ignition (only when ignition is on) & also goes back to the Ungo brain for 12V ignition input.

This is exactly how the Ungo (MS8300) installation guide says to wire the relay but for whatever reason it is NOT killing the starter when the alarm is active.

I have triple checked the following:
relay is receiving the negative trigger when the alarm is activated.
12v ignition is making it back to the Ungo brain
I did cut the correct starter wire (doesn't turn over when relay is removed).
I even tried swapping the relay with another.

Any idea why the relay is not killing the starter when the alarm is active? I am totally stumped.

Thanks!
Jon

PS the subject vehicle is a 1989 VW Vanagon in case that matters. I don't think it does.
 

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So the negative output is "Ground when Armed"? And when you say alarm is activated, you're talking about pressing Lock/Arm, walking to the vehicle, unlocking with a key, opening the door, alarm start going off, you put the key in and the vehicle still starts?
 

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Discussion Starter #3
So the negative output is "Ground when Armed"? And when you say alarm is activated, you're talking about pressing Lock/Arm, walking to the vehicle, unlocking with a key, opening the door, alarm start going off, you put the key in and the vehicle still starts?
Yes & I checked with a test probe. position 85 receives a constant ground signal when the alarm is activated (doors lock). I am actually sitting in the car, arming it & then testing. I can start the car with the alarm armed, disarmed, even if the siren is going off!

Thanks!
 

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Discussion Starter #4
I figured it out! What I thought was 12v ignition going into relay position 86 was actually accessory power (which means it was shutting off when turning the key all the way to the start position). I rewired it to the actual 12v ignition power & now the relay kicks on & disables the starter when the alarm is active.

Cheers,
Jon
 

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jonsonneborn: I have some extra remote controls for the MS8300 if you want them. Let me know via PM with your address and they're yours.
 
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