where are the relays located in a 2004 toyota sequoia sr5?\

Inside a box in the engine bay, on top of the driverside fender.

Thank you for the reply. I have found the 2 electrical "containers" under the hood. Regrettably none of the literature I have found so far describes what the relays are related to. Instead the only info provided is what each fuse does. I'm troubleshooting a condition where both tail lights are lit all the time...even when the key is turned off. The subject lights are at the top of a trio of lights installed on the rear quarterpanels (not on the hatch) of the vehicle. The top lights, which are red, are lit all the time. The backup lights and turn signal lights operate normally. From this I conclude that a relay which powers the tail lights has contacts that are welded together. It looks like I'm going to have to pull relays one at a time to find the one that turns the tail lights on. Then I can test that relay to see if its contacts are welded. If the contacts are NOT welded and the relay operates properly, then the next step back is the "integration" module (whatever that is!!!) which is another electrical component whose location is a mystery and see if something has failed with it. Advice from anyone with experience troubleshooting this odd condition is certainly welcome. Many thanks for your attention to this issue.