multiple led & starter kill circuit wirin

hey folks, hope your holidays went (are going) well.  gotta quick one for you. ive searched and feel pretty confident, but want confirmation.

i am gonna hook up 3 extra leds and a scanner. im not conversant enough with diodes to use them (stick with what you know, right). i am planning to run a relay for the neg output from the alarm (as a distribution center). from its output, i will hook  up two more relays: the starter kill relay, and a relay for the Varads.  (all leds are the 3 wire [pos, grd, -output when armed] variety.). 

(the output of the starter kill wire is 500ma. im fairly sure that it can support triggering two relays, but im insanely anal, so i figured a "distribution relay" would remove any doubts). i dont mind using an extra 2 buck bosch relay.

                                                                                                            |--starter kill relay

 orange output from alarm (500ma)------distribution relay----|

                                                                                                            |--  led relay   

sorry, i can't draw diagrams too well on a computer or in this forum. LOL.

sound good? no need for blocking diodes (other than the existing one in the starter kill socket), etc like this, right? i figure all the Varads wiring will be tied together anyhow, and the relays isolate any feedback problems (from led's to starter kill, etc), no?

i really appreciate any and all help (telling me im nuts, or that it sounds good). im open to other ideas as well (like i said, i [try to] do what i know).

many thanks in advance.

xetmes and Teken, thank you for your responses. i have always been unclear on just how much power a relay's coils draw (always read 50-200ma). that was why i was unclear if i could power two relays off of the starter kill output (500ma max).  i was not feelin great about having the power draw of 3 relays, either. the alarm is only on for a very max of 13 hours at a time (only when the g/f is at work).

Evil, i had read that thread when i was researching this topic (i read about 20-30 threads). Hamilton's response in that thread was actually what made me think i would be ok doing what i suggested.  (without the third relay though).

i am still unclear on how i would utilize diodes on this (even after reading the other thread).  i had the same question as digger did (halfway down other thread) about what you said (is his interpretation correct? i understand what he is saying. i think your diagram confused me [not hard to do). LOL]

i would create a "Y" wire from the orange alarm neg output wire. place a diode on each leg of the Y, and then run one leg of the Y to the starter kill relay and the other leg to the  leds???  BTW, the three leds draw 20ma each, and im not sure what the scanner will draw. sounds like a relay will draw less juice than powering the led's alone, no?   so if i do two relays (like i originally thought, but without the distribution relay), that would work?   i wont overdraw the 500 ma output of the ground output?  any diodes needed for this?

i really appreciate the input. you guys rock.. hope your holidays went well!

thank you guys so much for the education.  Teken, that diagram made it all clear (i suck at visualizing, but pics are great). 

i like the part about measuring what the coil draws. do you use a VOM across the coil terminals (85 and 86)?  i did this and it read 80.7 ohms. im guessing this is what you do (ive never known to do that). 

so i have 3 led's *20ma/each and a scanner (i havent gotten it yet-dont know what it draws, but id guess around maybe 100ma (9 leds). this sound plausable?

should i wire it like the diagram [Teken] attached, or should i use a relay for the leds? im still not sure on the numbers.  (id wait to get the scanner so i can crunch some numbers, though i  thought you might have a good idea. im still afraid of overloading the 500ma meg output). i tend to be very cautious when i dont know what im doing. LOL.

i hear you on the dead battery  stuff. like i said, the alarm is not on except for when she is at work (up to 13 hours). then it is driven.  i would feel real confident about using only the diode (like the diagram) for the three leds, just not sure about the scanner (never had one). im really afraid of frying that circuit.

thank you all very much again. i really appreciate it and have learned a ton.