boot release switch power supply

I have a late 2004 TF115 and I'm fitting a remote boot release. The feed is via a relay, and I don't want to have to hide the switch, so I'd like to control the relay using a supply which is only live when the car alarm is disarmed, can anyone tell me where I could take this supply from?

Hi,
Tap into the cigar lighter, on a 2004 TF its always powered up, not switched from the ignition this makes it ideal to feed the boot release circuit, and is handily located to where most people put the switch.
If you use a switch that has a rating of 5 amps or more, you can leave the relay out and feed the boot release solenoid directly from the switch, making the wiring simpler and with less to go wrong.
I used a 10A rated industrial push button fed from the lighter circuit (this is fused at 10A) which switches directly to the solenoid. The -ve connection I just connected to boot release mechanism housing using the boot lid as a -ve earth return.

Sundance

If you want it at the back, there is an easy connection to the reversing light switch which is controlled with the ignition. Does that help?

What I really want is a supply which is only live when the alarm is disarmed but with the ignition off, so that I can open the boot with the car unlocked, but the key not in the ignition.

Alternatively an earth which is only earthed when the alarm is disarmed.

Not sure that you have earth or live which are active only when alarm is disarmed. Alarm is not working in that way.

Hi Sundance,

I know I've seen your installation before but I forgot to ask previously, were did you get your solenoid kit from?

Squashman

I used a boot solenoid from a ZR, this has a cable that I hooked on to the release mechanism. The cable meant I could mount it in a less intrusive position close to the boot lock. I used a Saab boot release button which is quite capable of handling the power.

My solenoid is also from a ZR but, I also used a ZR latch and used the rod connection direct to the latch and also close mounted. I did use a relay operated by a small momentary switch and mounted the relay behind the boot carpet trim on the relay bracket that is on the N/S/R of the boot .
John