Yock's or Rey Electrical

[oj88]

alarm and tail light on one side is not working, also sa auto lock remote ayaw din gumana

If aftermarket, the alarm and remote auto-lock is probably the same module. Fuse, maybe? Loose ground point?

The tailight problem could be something else.... If the whole assembly on that side is not lighting up or lights up in an unusual manner, it could just be a grounding point issue.

It's far-fethed but if the tailight and alarm module are using the same faulty ground point, that could potentially be the root cause.