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Old 07-14-2003, 22:00   #1 (permalink)
drift an slide!
 
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positive door wire for alarm????????

i have recently installed an alarm into my beast!
but have found that the alarm door triggers use a negative door switching current and of course just to be difficult my door triggers are positive!
i know thta i need to chuck a relay or wo in there somewhere but i woodnt have a clue where and wot one?
Can anyone help me out?
Cheers guys
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Old 07-15-2003, 07:00   #2 (permalink)
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Courtesy Lamp

The best place to pick up the wiring is the A pillar switches.
Either drivers or passenger door.
There are two wires into door switch that operates the interior lights.:-
Green/yellow - has 12v on it via the Clock/Courtesy Lamp fuse in the fuse panel.
Black/Blue - goes to the lamps.
If you use a standard relay this will have pins 85, 86, 87, 30.
Wire pins 85 and 30 to earth (chassis)
Wire pin 86 to the Black/Blue wire
Pin 87 will provide an earth for connection to alarm door trigger.

If another 12v relay type.
Connect black/blue to one side of the coil and chassis to the other side.
Connect one side of a normally open contact (relay not energised) to chassis and the other side to the alarm trigger.
When the door opens, the relay operates connecting the trigger to chassis (-ve).
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Old 07-16-2003, 08:10   #3 (permalink)
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just buy a new pin switch for each door. bout $5 bucks each thats all my sisters b/f had to do on the AU coz of the same problem
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Old 07-17-2003, 01:09   #4 (permalink)
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2nd pin switches

Is OK if you don't mind drilling a second set of holes and wiring in the additional switches.
Hmm, lets see...

4 switches x 4 = $20
1 roll of wire = $4
drilling holes & pulling all the panels off to run all the wires = 2 hours

versus :-

1 x relay = $8
Wiring it in = 30 minutes.

'Nuff said !
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The XR family ---->
Muzza: a XR8 AU seriesIII...bog standard :)
TBH: (the better half) drives an ED XR6 wagon (Mock Dev 4 160rwkw, JMM extractors, 4 electric windows, Ghia door panels in XR trim, rear head & arm rests in XR trim, Momo s/wheel with Cruise, EL thermos, EBGT wheels, etc) things to come soon = EECV upgrade.
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Old 07-17-2003, 17:53   #5 (permalink)
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so true,
cheers for your help guys, gonna get a relay and do it when i find some time.
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Old 07-20-2003, 19:37   #6 (permalink)
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Re: positive door wire for alarm????????

ok guys i whacked the relay in and all is good, althought 1 small prob. when you disarm the alarm the interior light is ment to come on for 30 sec or til u start the ignition tho now this is not happening. i must need another relay somewhere or something? can any one help?
cheers so far
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Last edited by driftagent; 07-20-2003 at 19:39.
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Old 07-21-2003, 06:57   #7 (permalink)
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Interior light.

What actuates the interior light ?
There must be a wire for this out of the alarm unit ?
I would assume there would be a wire.
If it provides a -ve :-
You will need a 2nd relay.
Connect the "interior light" wire from the alarm to terminal 85 on the 2nd relay.
Connect terminal 86 to the constant +12v that powers the alarm module.
Connect the relay contacts terminal 30 to Green/yellow and terminal 87 to Black/Blue.
The alarm "interior light" wire will actuate the relay and the contacts will do the same as the door switch does and turn the lights on.

If the alarm "interior light" wire provides 12v (will have a fuse on it back near the alarm box) then connect this wire to Black/Blue.

There is also the possibility that the -ve door trigger wire performs the dual function of detecting the door opening and also providing a -ve polarity to activate the lights. If this is the case let me know and I will see if I can work this one out.
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The XR family ---->
Muzza: a XR8 AU seriesIII...bog standard :)
TBH: (the better half) drives an ED XR6 wagon (Mock Dev 4 160rwkw, JMM extractors, 4 electric windows, Ghia door panels in XR trim, rear head & arm rests in XR trim, Momo s/wheel with Cruise, EL thermos, EBGT wheels, etc) things to come soon = EECV upgrade.
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Old 07-21-2003, 18:52   #8 (permalink)
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Re: positive door wire for alarm????????

yeah it's the door trigger that activates the light. so im lost on that one, thanks heaps for ur input tho.
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Old 07-22-2003, 06:09   #9 (permalink)
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OK, that was fun working it out.

Try this combo.
You will need two relays with changeover contacts.
See attached diagram.
Be aware that there is a relay type with two off "87" terminals in lieu of an 87 and an 87A.
You need Narva part number 68052 or similar.
Use a relay with no protection device across the coil if possible.
Do not use a relay with built in diode but a resistor is OK (the 68052 has a resistor).
No responsibility accepted, have not tested it, but it should all work OK.
__________________
The XR family ---->
Muzza: a XR8 AU seriesIII...bog standard :)
TBH: (the better half) drives an ED XR6 wagon (Mock Dev 4 160rwkw, JMM extractors, 4 electric windows, Ghia door panels in XR trim, rear head & arm rests in XR trim, Momo s/wheel with Cruise, EL thermos, EBGT wheels, etc) things to come soon = EECV upgrade.
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Old 07-22-2003, 09:07   #10 (permalink)
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i just got an alarm installed and the people at autobarn and bayford say its not possible to get the interior lights to work with the non factory alarm
my lights dont activate wen the alarm is disarmed and they dont turn off wen the alarm is armed; they just fade out 30sec after the door has been closed.
so if i do what it says above will both my problems be solved? thanx
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1997 EL FAIRMONT GHIA, Sparkling Burgundy
Cold air Intake: BMC Pod, box mounted with 3" pipe & T-Series Snorkel
Herrord 2.5" Exhaust and Extractors
Lowered: KingSprings 30mm All round
EL GT Rims
Stereo: 2x Alpine Type R Subs, MRD-M605 Alpine Amp, 4x150w VDO Amp, Alpine 5.25 Type R Splits, Alpine 6.5 Type R 2ways, Alpine CDA 7894RB Headunit
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