DEI mini piezo siren install question

2002 Toyota 4runner (not that that part matters as far as this question goes), and i just installed the new Viper 791XV (alarm with built in remote start function and a 2 way LCD remote).

I bought the DEI 513T mini piezo siren for the interior of my truck. Do i need to hook up a relay to run this puppy, or can i get around it by just hooking it up to the alarm output in parallel with the regular DEI soft chirp 6 tone siren?

The +12v siren output wire is brown. however, in the alarm install booklet it says this wire is only capable of supplying a 1 amp output. however, i do not know how much current the regular siren draws, nor how much the mini piezo draws (as the mini piezo came with NO  paperwork. just the siren in the box)

i am fully knowledgable on relays and have no problem doing so. in fact i have 4 extra DEI relays sitting in my toolbox - but if i can avoid less wires under the dash, id like to (and, itd be one less part to break down the road)

however, i dont want to skimp on the install. so if it needs it, so be it!

anybody know?

thanks in advance guys!

william

the soft chirp siren came with the alarm, i dont know why i would need a relay for that. it just hooks up to the alarm output on the alarm. as for the piezo siren, it wouldnt surprise me if i needed a relay. however, if it says both sirens draw really low current, maybe i dont need a relay??

anybody else have any input on the topic?

thank you kind fellow  thats sort of what i thought, but better safe than sorry -

i agree with your "when i doubt" statement.

on another note, your idea to hook the siren up to the door pin is not practical at all.

1) if the siren is going off, that means the alarm is going off because somebody has tampered with the car, so why would it matter if the shock sensor is upset? the alarm has already been triggered, right?

2) if i hook the siren up to the door pin, what is to stop a thief from opening the door (okay, now piezo is going off), then getting into the drivers seat and closing the door behind him (okay, now the piezo has shut off and his ears arent in excrusciating pain anymore because he closed the door, which turned off the siren)

i see where your idea was headed, but it wont work

i like hearing new ideas though, anybody else?

william

No sensors can trip a DEI alarm until 3 seconds after arming. there is a 3 second delay. even thus, the arming and disarming chirps of a siren should not upset a shock sensor

there is still a 3 second delay after you arm the alarm on the viper 791xv (and maybe all vipers, i dont know) before any sensors can trip the alarm. it says it right here in the owners manual  

however, that statement may hold true for other alarm models.

i am interested in researching that though! thanks for the input. i appreciate all of you guys comments!

hey bobk,

i read your post in another thread stating;