Winch connection sets off alarm

Hi
I have just fitted a Warn winch to my TD5 90. The 2 cables (positive and negative) run from the winch to a heavy duty switch and then to the positive and negative terminals of the battery. The problem is when I turn the switch on to supply power to the winch the siren of the alarm goes and will not stop unless I disconnect the battery and reconnect it again. The alarm is the standard one. The hooter does not activate as it does if the alarm was activated and I think the alarm/immobiliser does not activate it is just the siren.
Have any of you guys had this problem when fitting a winch? Any ideas would really be appreciated.
Thanks

have you tried only turning it on when the engine is running??

Reckon that yer alarm is sensing a drop in power and its misunderstanding. It probably thinks that it and yer Landy is being nicked.

Regards WP

that was my thought which is why i said to try with engine running..

Thanks guys problem sorted- enging must be running!!! Obviously the voltage drops and messes with the alarm -have a good weekend.

who says we can't help people and still take the ****???

Another satisfied customer eh Slob.

Regards WP.

certainly is!! we should charge people for this.. small problems= mild abuse
big problems= mild abuse with a family connection to wheresdildo747
freelander =well you guess