Went to put in my alarm today, its just a simple astra 600. I noticed that the guy I bought the car from ripped out his old one so I did a lot of time figuring out what's what and organizing the wires. Now, I've done some alarms in the past but never a 5 wire reverse. The alarm comes with both 3 wire and 5 wire type of locks. I have a dei 451? And I am just clueless if I should use that. I have 2 relays that my power locks are hooked up now. This prolly makes no sense but it's worth a try. Oh and the year is 89 if that matters!