1997 Volvo 850 Turbo

HI!  According to astro chart  starter is GREEN/ red    Ign is blue/red  Bat is Red there is two acc wire  Yellow/purple   and   Lt.blue / YELLOW   the parklights are white (+)  the brake is yellow (+)  you need 2 relais + 2 diodes to do unlock/disarm and lock/arm   if you can check the  Astrochart diagramcocolaboy

12+                 red starter              GREEN/ red Ign                   blue/red ACC                  yelloe/ppl     all located in a plastic tube harness located behind the relays near the firewall Power Lock        yellow/gray (-) power unlock     Blue/brown (-) (requires double pulse) Located in drivers door harness Parking lights    white+    located at the switch Use relay to isolate switch side of wire to prevent car from unlocking on arm. Door trigger       yellow/white Located near hood release Do not use the pink/black domelight wire since it is affected by the delay and turns off 60 seconds after the door is opened. Factory alarm arm (arms with lock) Factory disarm (dis-arms with unlock) If remote starting you will have to set up your unit to unlock the doors prior to start and then re-lock. Some remote start/alarms do not have this feature. Otherwise test factory alarm by arming the system and the starting the car with the key. If the alarm does not go off then do not worry about this step. Tach    Blue located at the coil and is AC Trunk or hatch pin    blu/brown (-) Loctaed at parklight harness Hoodpin   yellow/black (-) Located at hoodpin Brake   Yellow This is from DEI, hope this helpd you, The above wiring may not be correct, always check using a computer safe multimeter Chris