I installed an alarm system in my 100nx today, and decided I'd write it up to save others some time.
My alarm system was a Maplin A65HB (Portman AM570) and contained utterly useless installation instructions. I have half a mind to re-write it and include the information that is needed, instead of just a stupid wiring diagram without a key.
So anyway, here's what I learned
.
Indicator flashers
The indicator wires are in the drivers footwell in a big bundle to the right (RHD) or left (LHD) of the steering column. You will need to remove part of the dash which blocks the access from this area. There are two screws just underneath where the instrument panel ends. Undo these, and you should be able to pop the piece of plastic out.
The wires you're after are green with a yellow stripe and green with a black stripe. Splice into them here with the flasher cables from your alarm system. Don't bother putting the panel back if you have an immobiliser system, since you'll need more cables down here.
Ultrasonic sensors
Installing ultrasonic sensors is easy enough. Pull the rubber seal away from the door opening, starting at the top and working down the windscreen pillar. Starting at the top of the plastic trim, pop out the clips holding it on (I think there's only two), and pull it upwards and towards you to release the hook at the bottom. You can run a cable down here quite easily and reverse the process to put it all back (not forgetting to clip the bottom part of the trim in first).
Immobiliser
Depending on your alarm type, you may have an immobiliser. On my kit, I was supplied with a relay to connect to a few cables around the key barrel.
You need to cut into your ignition wire, which is a little daunting, but it's easy enough to connect back up with a junction block if you screw it up. The wire in question can be found by tracing back from the key barrel to where the plastic connector is. From here, the wires change colour.
The colour you're after is black with a red stripe. Make sure you test the wire with a multimeter (black probe on chassis, red one in the end of the connector where the wire is, and turn on the ignition) before chopping it, just to be sure it's the right one. I had to cut away some of the plastic tubing to gain access to more of the cable so I could put junction blocks on each end.
Your alarm system will contain instructions on how to connect the ends of these wires. Mine didn't, but I managed to figure it out after throwing a hissy fit or two.
Siren
I mounted the siren in the engine bay, on one of the redundant screws from where I removed the original air filter tubing. I'm sure you'll be able to find something to bolt it to in there. I pulled the rubber bung out of the firewall and poked the cables through there. I should really have cut a cross in the bung and shoved them through, but I found that it sealed sufficiently by just putting the cables through the hole, and pushing the bung back in.
Main alarm unit
I used the same hole for the power cables for the main alarm unit as I did for the siren. I think I'll just be stuffing the alarm unit behind the dashboard, since there's quite a bit of space in there, and I don't know where else I can mount it.
This is as far as I got today. Tomorrow I will be buying an actuator for the drivers side door lock, and hooking that up to the alarm system. Then I'll wire the interior lamp up to the alarm system too. I think this is so that the alarm knows when the doors are open. That, or it's so it'll turn the light on when I disarm the alarm.
So, I'll update you with my progress tomorrow
Edit: Also, I'll be mounting the shock detector somewhere. I had a look around, but couldn't see anywhere obvious. I'll let you know what I come up with
Edit 2: Oh yeah, I'll take some pictures, and check all the facts, since I'm writing this from memory now
Edit 3: Ah, and of course thanks to Sergio for his factory service manuals!!
My alarm system was a Maplin A65HB (Portman AM570) and contained utterly useless installation instructions. I have half a mind to re-write it and include the information that is needed, instead of just a stupid wiring diagram without a key.
So anyway, here's what I learned
.Indicator flashers
The indicator wires are in the drivers footwell in a big bundle to the right (RHD) or left (LHD) of the steering column. You will need to remove part of the dash which blocks the access from this area. There are two screws just underneath where the instrument panel ends. Undo these, and you should be able to pop the piece of plastic out.
The wires you're after are green with a yellow stripe and green with a black stripe. Splice into them here with the flasher cables from your alarm system. Don't bother putting the panel back if you have an immobiliser system, since you'll need more cables down here.
Ultrasonic sensors
Installing ultrasonic sensors is easy enough. Pull the rubber seal away from the door opening, starting at the top and working down the windscreen pillar. Starting at the top of the plastic trim, pop out the clips holding it on (I think there's only two), and pull it upwards and towards you to release the hook at the bottom. You can run a cable down here quite easily and reverse the process to put it all back (not forgetting to clip the bottom part of the trim in first).
Immobiliser
Depending on your alarm type, you may have an immobiliser. On my kit, I was supplied with a relay to connect to a few cables around the key barrel.
You need to cut into your ignition wire, which is a little daunting, but it's easy enough to connect back up with a junction block if you screw it up. The wire in question can be found by tracing back from the key barrel to where the plastic connector is. From here, the wires change colour.
The colour you're after is black with a red stripe. Make sure you test the wire with a multimeter (black probe on chassis, red one in the end of the connector where the wire is, and turn on the ignition) before chopping it, just to be sure it's the right one. I had to cut away some of the plastic tubing to gain access to more of the cable so I could put junction blocks on each end.
Your alarm system will contain instructions on how to connect the ends of these wires. Mine didn't, but I managed to figure it out after throwing a hissy fit or two
.Siren
I mounted the siren in the engine bay, on one of the redundant screws from where I removed the original air filter tubing. I'm sure you'll be able to find something to bolt it to in there. I pulled the rubber bung out of the firewall and poked the cables through there. I should really have cut a cross in the bung and shoved them through, but I found that it sealed sufficiently by just putting the cables through the hole, and pushing the bung back in.
Main alarm unit
I used the same hole for the power cables for the main alarm unit as I did for the siren. I think I'll just be stuffing the alarm unit behind the dashboard, since there's quite a bit of space in there, and I don't know where else I can mount it.
This is as far as I got today. Tomorrow I will be buying an actuator for the drivers side door lock, and hooking that up to the alarm system. Then I'll wire the interior lamp up to the alarm system too. I think this is so that the alarm knows when the doors are open. That, or it's so it'll turn the light on when I disarm the alarm.
So, I'll update you with my progress tomorrow
Edit: Also, I'll be mounting the shock detector somewhere. I had a look around, but couldn't see anywhere obvious. I'll let you know what I come up with
Edit 2: Oh yeah, I'll take some pictures, and check all the facts, since I'm writing this from memory now
Edit 3: Ah, and of course thanks to Sergio for his factory service manuals!!
