508d, shock sensor wiring

I am going to be installing a Python 990 Alarm & Remote Start in my 2008 Ford Escape. I want to install the 508D prox sensor, 506T glass sensor, & the stinger shock sensor that the alarm came with. Now the 506T came with a Y harness that basically combines the two together with the 506T on zone 4 and the stinger on zone 2. both keeping the warn away and full trigger because the brain monitors the timing. Now here is the part i want to make sure i am doing right. I want to wire in the 508D prox sensor on the zone 2 line so the singer and the prox monitor the vehicle itself and if i get annoyed by it going off and i bypass the zone. When someone smashes a window i still want the 506T to be on and set the alarm off. Now on the stinger senor the blue and green wires are tied together going down zone 2. Correct me if I am wrong, I should connect the blue and green wires directly to the wiring where the stinger is on its side. I have heard conflicting responses saying that you should or shouldn't diode isolate the two. Same say you should, but if they are on the same line how will the brain determine which one is different if they are both going to report zone 2, so either way it is going to warn or trigger a full alarm. (UNLESS THE TWO INTERFERE WITH EACH OTHER IN SOME WAY THEN I CAN SEE WHY I WOULD NEED DIODES, PLEASE CLEAR THIS UP FOR ME.) Also I dunno if the 508D draws a lot of current, I know DEI put both the stinger and the 506T on the same 12+ and ground. should i add the 508D prox right in or connect the 508D to its own 12+ constant and I was thinking the orange ground when armed wire on the brain, hell why do i need the prox on when the alarm is off, however if i can go and keep all the sensors together on the same wire harness that would keep things neater and easy to follow if i ever had to go back at the wiring for some reason.

Any input or discussion would be appreciated.

Thanks,
Dan McNeill

I would use the Y of the 506 to connect the 504. Then, connect the 508D (twist blue and green together without diodes) to the BLUE (-) MULTIPLEXED INPUT, ZONE 4 in the main harness.

Press "ARM" a third time within five seconds: The siren chirps three times followed by a long chirp. Zone 4 is now bypassed if needed.

I recommend that you get the power from the red in the main harness.

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