diode direction

so today i installed my Viper 5901 in my 2004 subaru STi with the following addons:

507m Tilt sensor
520t Backup Battery
530t Window module

so my issue is im having a hard time understanding the directions of the diodes connecting to both the blue wire (Instant trigger) and the orange wire (-) (Ground when armed) i installed all diodes with the stripe away from the brain for all wires connecting to the orange and blue wires. was this correct?

i'm thinking it isn't only because when i arm the alarm the windows dont roll up.

i was reading for the blue wire (Instant trigger) that the diode stripe should be facing the sensors (away from the brain), but wires connecting to the orange wire (Ground when armed) should have the diode stripe facing towards the brain.

can someone please help me out. i dont want to burn anything out, and hopefully i didnt. if i have to change the diode position i want to do it asap. Thanks.

Chris

Stripe towards the brain.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Sorry, stripe towards the brain on Orange, stripe away from brain on sensors.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

The current flows OUT the line end - ie from +ve in the other end and out the -ve line end and through the circuit.

That's easy to remember if you know the diode circuit symbol where its "arrow" shows the direction of current flow, and the symbol's "perpendicular" at the pointed end of the arrowhead correlates to the diode body's line.

Click the Diodes link in the upper Menu Bar above to see the symbol etc.
(Yes, the12volt has it all!)


Diodes are used to prevent other sources back-feeding into the diode's source.
Knowing the desired current flow direction (from + to - ) and the "arrow" symbol should make the correct connection/direction easy to work out.

thanks so much for all the help. looks like i had the diodes on the blue wire wired correctly but the ones on the orange (ground to arm) wire reversed. now the million dollar question. by doing this did i mess anything up?

No and if you turn around the diode on the orange wire, your 530t will now work.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

howie ll wrote:

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Sorry, stripe towards the brain on Orange, stripe away from brain on sensors.

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howie from what i quoted you above. the 507m is a sensor as well. i believe i have the blue wire correctly wired on the diode but the diode on the orange wire is so the stripe is away from the brain. this should be flipped just like the diode on the 530t, correct?

thanks again!

Stripes on sensor wire diodes, all to face the sensors NOT the brain.
Orange GWA wire going to 530t, diode stripe TOWARDS brain and away from 530t.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Look at this:-diodes.bmp

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

thanks so much. looks like i only need to flip the diode on the 530t. thanks howie!

i've got one last question: on the blue wire (trunk/instant trigger) on the main brain i have the following connected:

507m diode isolated

i still need to tie in my existing trunk pin switch on my 2004 subaru sti. i believe that will need to be diode isolated as well. direction of the diode will need to be towards the trunk pin switch correct?

the only problem i see here is that the wire i will be tapping for the trunk pin switch is the wire from the trunk pin switch to the trunk light. see the attached diagram on the link im referring to. its the bottom left diagram.

https://wiringinstructions.com/v2/training_guides/Understanding%20%20Diodes.pdf

I've changed the diagram to show you.A89_diodes.bmp

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

thanks howie just looking at the diagram. the only difference i see in my installation is that one of the sensors ties into the orange wire that the 530t is also tied into. so the orange GWA is tied into both the 530t and the 507m.

alright just fixed the 530t by reversing the diode and the windows rollup when armed now. thanks alot! i understand how the diodes work now just gotta pay attention to whats an output and input. once i realized the flow then the orientation of the diode makes sense. thanks!

No, no, no!!!!
Orange GWA ONLY goes to the 530t!   My mistake in the diagram, the two thin orange wires should be green! That's the wires coming from the sensor.
You're quite right, learn the direction of the current flow and you will understand diodes.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

howie ll wrote:

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No, no, no!!!!
Orange GWA ONLY goes to the 530t! My mistake in the diagram, the two thin orange wires should be green! That's the wires coming from the sensor.

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Howie,

see the attached link for the 507m tilt sensor i installed:

507M Instructions

i followed these instructions and connected the orange wire from the sensor to the GWA orange wire on the alarm brain as well but diode isolated. so currently i have the 507m and the 530t connected to the orange GWA. i have flipped the diode on the 530t and it is working as intended. i havent flipped the diode on the 507m yet but will do it soon.

am i right? or is there something im missing.

thanks,

Chris

No the orange was correct, I simply ground the black wires coming from the sensors, it's optional 2 use either. Using the orange to ground them is more "proper".

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

howie ll wrote:

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No the orange was correct, I simply ground the black wires coming from the sensors, it's optional 2 use either. Using the orange to ground them is more "proper".

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okay so all i really need to do is flip the diode on the 507m and then it will receive a ground when armed and everything should work fine?

Yes. This is hopefully the final version:-3F4_diodes.bmp

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.