Turn Signals
 

So decided to do an LED & white halogen bulb upgrade on my 02 Boxster S with HID lights. Did side markers with LED, front parking with halogen hyper white, & license plate with LED. 10 min job. All of a sudden, no turn signals, I mean dead. nothing. SO I check the forums to see what I can find. Got fuse Diagram & checked it & it was blown, replaced, ( 15amp) blown again, 3x . Changed to 25amp, doesn't blow, & hazards now work, still no turn signals front or back. But hazards front & back work. I checked, 1, twice & 10x my light assembly alignment to make sure they are seated well, & they are. I am thinking relay? any thoughts?

Try putting the old bulbs back in first. What's the wattage of new bulbs? I've seen the circuit do weird things when overloaded.
That would be my first step. If they work with old bulbs in, you need to use bulbs with OEM power consumption.