Just came across this old thread.
If anyone is interested I have some info on these remotes which may help others with the same relay.
Picked up a new 850 sedan without remotes but the battery went dead car could not be started.
Immobiliser key over-ride emergency switch was in the glove box but we had no key or remote to disable the immobiliser so had to hot wire the glove box key switch to get the car started again.
Our other 850 with working remotes was about to be junked by the insurers so we swapped that one over - basicly a straight swap.
The Australian immobiliser is a straight swap out of the genuine volvo relay which for some reason was not used here as far as I know. The aussie one is very el-cheapo in a crude black plastic box with a home made looking perspex plated relay substitute . I've seen better chinese immobilisers with central locking on ebay which could work just as well.
Also found a company based in Perth that will sell genuine spare remotes for these units. You dont even have to send them the old one as they can provide a new one from a picture for around $65 each or they will repair the old one for around $20.
Company name is Dynamco 10 Brown street East Perth WA 6004
Contact is Damian Shelton
Damian@dynamco.com.au
