I have done a bit of wiring & this is what i thought but when i tested the wires it seems the yellow has constant power not the red.
Yes the yellow seems to be permanent positive. The led i have got is just a universal as toad wouldn't get back to me anytime i asked to buy an led, so it only has two wires. All i want is it to flash when armed because there has been a few cars broken into lately. So i suppose if i can find out what wire is for the armed earth.
This is why i'm afraid to just try joining wires, know in my luck my car will get immobilised lol.