basic connection methods for an amateur

Hi So After breaking a few clips I managed to find places for my alarm control module, siren and shock sensor. I want to know where is the best place to get power for my alarm module? I saw on youtube someone poked a screwdriver through the firewall but in my polo it's steel and there no cable entry holes I can see. I don't really want to start drilling holes. I don't think I could fit a drill in anyway. Could I get it from the ignition? Can I get the connectors used from the dealer? The hazard light switch has a connector on it. Alot of the wiring has PITA connectors. I don't really want to cut it off or splice into wires. But if I do have to what do you think is the best method?

To be honest if you're asking questions like this you shouldn't be attempting an install. You will have to go through the bulkhead for the siren. Access to your required wires will be under the right hand dash. You strip and solder, that's the be-all and end-all. For how to advice there are some superb threads in the general discussion section.

Agree with Howard.  It's your car and you want to do it right.  A DIYer might not be

held to the same standards as the professionals, but the U.K. sure seems to have a bunch of regulations concerning vehicle aftermarket alarms, etc.

You should be able to find a firewall grommet at an auto store or even salvage yard

that is the correct size for your needs.  Just verify the drill site for obstructions onboth sides of the firewall first.

Properly soldered and insulated wire connections are the best method and the tools

required are fairly inexpensive ( plus they can be used for many other projects aroundthe house in the future ).

Soldering is fun!

There appear to be inconsistencies between this and your previous thread. In the previous thread you were aware of having to go into the driver's door for lock/unlock/window close yet now you are asking about power? The reason I gave you driver's side under dash, drop the trim obviously is that here you can access 12V+ Red Ign BLACK/ blue Ground (Earth) follow the brown to a 10mm mounting nut. Lighters (indicators) BLACK/ green (right) and BLACK/ white (left). Trunk (hatch)trigger, BROWN / black, bonnet (hood) BROWN / red doors, can't remember, CAN Hi and Lo, all these connections under the right hand dash in every current VW/Audi/Seat/Skoda/Porsche.

This is from an 08 VW T5 but the principal is the same. 12V+     Red x 2 +     Ignition switch loom Ignition 1     Black +     Ign switch loom Ignition 2     BLACK/ red +     Ignition switch loom ACC     Thin BROWN / green +     Ign. switch loom Start     Black +     Ignition switch loom Ground     Brown -     Various mounting bolts Indicators     BLACK/ green + BLACK/ white +     BCM underdash Lock     Yellow/blue or blue/white, TEST - NEG to lock, NEG via 1kr** to unlock loom from driver's door. NOTE: On one I did recently I had to wire the unlock to the wire inside the vehicle and the lock wire into the SAME COLOUR wire in the door.      Unlock     Ditto one wire multiplex.      Door triggers*     Front right black - others BROWN / blue, use diode network     BCM Bonnet trigger     BROWN / red -       Boot Tach      Injector wire, diesel, use a tach generator. Handbrake Blue/black - NOTE= one of two, the thinner wire     Centre loom adjacent to base of gearshift. Brain     Cable tied to underdash strut or double side or drilled to support cross member      *Test. ** Recent models might have a different value, up to you to test.

There's no info on this vehicle, I'd use a CAN conversion box from either Fortin or a DB-ALL from Car Audio and Security the DEI importers. Unfortunately my principal (contractee) and myself own the UK Fortin stock and we need them. With the correct software flashed these will give you lock unlock, door bonnet and trunk triggers indicators comfort close (windows, roof if present) all without going anywhere but under dash. All for two connections at the CAN Hi and Lo and 12V+ and earth (ground). Need to know what make of alarm you're trying to install.

Hi Howie Hold on a second. I see no BCM module or wires all I saw what appears to be the air bag. The inconsistencies is because after much poking around I found the wires I need. Howie Forgive me if am being stupid. But I read in the manual you could wire the alarm upto the hazards. On the my polo the hazard switch just connects 12v to this wire then the hazards start flashing. then if you press the button again it switches it off I did just that but with a relay with my alarm module switching the relay but the issue is the hazards stay on when I press the lock button on the remote this I think is due to the alarm module lock button = causes the relay to switch on only once hence only switches the hazards on but not off unlock button causes the relay to switch on twice hence turns hazards on then off How can I work around this? Btw it's a cheap ass right click alarm module am trying to fit.

That means the wire you're using for the Hazards is a latching wire. I suggest you find an alarm that gives you a choice of POS or NEG light (or indicator) outputs and doesn't need to run off the lock unlock leads. Bluntly if you've bought a POS off of fleabay for £20 there's no point in giving you advice because because it ain't going to work properly. The only viable alternative would be a specialist CAN driven alarm, Cobra etc. do them but you won't get a DB-ALL from DEI etc. because the Polo isn't sold in North America so nothing's been developed, not worth trying a Golf unit there are too many differences.

Sorry, I just checked, the DB-ALL is available for Viper etc. alarms, as a pro, it's the only way I'd go to install an alarm on a late VW, you'll avoid all sorts of ££££ problems but it costs about £60 on top of a (decent) alarm price. From your previous posts I wouldn't suggest you try and hardwire a normal alarm. You wouldn't even have to go into the door.