dome light and door locks 05 tundra

putting a standard prestige alarm in an 05 tundra excab not double. i am told that dome light wire is high current and i need a relay. i don t have any idea what type door locks i have, but i think i am going to need relays for that also. any direction would be great.

The door trigger wires are negative and found in the BECU above the driver kick panel. The colors are as follows. The LF door is gray/red, gray plug, pin 15. The RF door is lt. GREEN/ black, black plug, pin 8. The LR door is RED / white, gray plug, pin 16. The RR door is RED / white, black plug, pin 4. Use all four wires and diode isolate each. why do you want to use the domelight wire, do you want dome supervision?commit your way to jehovah and he will act in your behalf. psalms 37:5