Integration Relay blues or something else???

[loghead]

Hi there,
I could use a little advice (maybe a schematic too).
Here's situation for my 99 Camry LE (4cylinder)
1) dome light is out (but bulb tests good)
2)one headlight works intermittently (but hi-beams are fine)
3) power locks are dead
4) digital clock is dead
5) Dealer alarm RS3000 is dead

My best thought is a bad integration relay (or maybe a bad ECU for the alarm?) I would appreciate any advice or schematics (all I have is the Haynes manual which doesn't give any good troubleshooting tips for the integration relay. thx for helping a newbie...

[Kep]

Did these all go out at once?

Kep

[loghead]

First the lights went out. Changed the dome light, then the clock went out.
Headlight comes and goes, hibeams are always fine. Then alarm system completely died and power locks too. Actually, the power locks now work again, but only with the key in accessory position... any suggestions for troubleshooting. Am I looking for a loose ground wire, bad alarm ECU or the integration relay (a.k.a. power distribution relay)

[Kep]

I am afraid that I am at a loss. The door lock thing is weird. Do all of the locks open when you use the key from the outside passenger door?

If it were one thing (a loose ground for instance) then they would all be affected at one time. I think you are looking at several different problems. Alarm systems can be devious but since the car starts I think that means it's OK.

Kep

[loghead]

it is weird. I think you may be right, perhaps there are multiple troubles here.
A few more observations;
1) using the key from the outside does not open all the locks. The ONLY way to get power locks to work is to have the key in the ignition
2) Digital clock does not light up (unless you press the set hour or minute button)!
3) Alarm system died sometime after clock went out
4) here is the order things went down: headlights, dome light, clock and the last to go was alarm system. this wasn't a lightning hit. And periodically the headlight starts working again.

maybe this isn't a job for DIY-er. I'm pretty handy at fixing one component at a time, but this might be a little too much heavy lifting. I still want to check some voltages on the integration relay (aka Power Distribution Relay) though

Thanks for thinking about my troubles, now as long as I don't get pulled over for driving around with an intermittent headlight...