which way to face the diode?

hi.....long story short.....i installed a remote starter into an existing alarm. Maybe 2 out of 5 starts, the alarm goes off, and the led indicates an door or the trunk was opened (even though they weren't).  Now, I think the door wire was piggybacked onto the trunk's wire on the alarm. I think this because:  the wire for the door that goes into the alarm is missing (it's not even in the plastic harness that plugs into the alarm).  Plus, when you open a door or open the trunk to set off the alarm, the led blinks the same number of times (even though it's not supposed to).  I think they tied the door wire into the trunk wire.  ANYway....the guy from the alarm company said to install a diode on that trunk wire going into the alarm, and maybe that will prevent some of the feedback that I might be getting, but he wasn't sure which way to face it.

 Which way should the stripe go.....towards the alarm, or away?  I'm thinking away?

Thank you.

(+) trigger = Cathode band towards the alarm

(-) trigger = Cathode band towards the trigger

Thanks guys!  When you install the diode inline with the wire:

• 1.  Do you have to cut the wire in half?.....or just strip two separate parts of the wire and install it that way.  Please see picture below. 
• 2.  If you install it the second method, can you thread the diode through the wire, and wrap the diode around it?  Will that prevent the flow?

https://www.imagestation.com/picture/sraid41/p....

Crap....does #1 work at all?  I was given wrong information before, and I did it this way (for a different application).  I threaded the diode through the wire, and wrapped it around. 

By the way, I mis-typed in my post.....I meant threading the diode for the first method, not the second.

ugh....I hate soldering, especially in the car

Yea, that makes sense.  Like I said, I guess I did it wrong because I used the first method for using the starter kill and the window module on the orange wire of the alarm. I haven't had any bad effects, though.  Are there some negative effects that I should be looking for?

Thanks for the help Jeff!

Where'd you get this one?  Haha. 

Thanks again....I'll redo that diode.

Can I use a connector rather than soldering?  Diode in one end, wire in the other?

CpGoose, remember when I ask you what wire you hooks up to the 550esp to the trunk, I hooked up the door trigger and jumpered the trunk wire, the alarm didn't have a seperate wire to connect to the trunk, so thats what I did, I was wondering if you did the same, so when I open the the door, it shows that the trunk is open, and vice versa,   I need to now if its giving  you problems because it might give me problems later,  I tried jumpering the hood pin wire to the trunk but something went wrong and it didn't act right, so I disconnected it, where can I hook up the trunk wire?

hey guys....can I just ask one more question?   I'm still not sure if I need 1 diode or 2?  Do I only need one for the alarm's trunk wire.....or do I need 2 diodes.....1 for the car's door wire and 1 for the car's trunk wire?  Ahhh.....better explained with a picture (#1 or #2)?  Do you think this could be my problem?

https://www.imagestation.com/picture/sraid43/p091...

https://www.velocitymotorsport.com/Door_trigger_isolation.pdf

Use either one of the diagrams

I'm still a little confused. 

Diagram A is telling me that if I want to have multiple trigger wires from the car work on one alarm input wire, to diode isolate each one to pin 85.

Diagram B is telling me that if I don't want to use a relay (but accomplish the same thing), to double diode isolate each wire?

I just can't tell if one of those is what was in my diagram.   I guess not because I didn't double isolate any of them.  Am I on the right track?

Can you repost that PDF file from two posts back....I just tried to click on it,  and I guess it's gone?