SD cart wiring (for PRS-Tech microSD board)

[silentjames]

Hey guys, I have a question about wiring (already asked at PRS sale thread). Following the wermy's guide, I've connected first, third, fifth and other pins to relevant PP-pins on the Pi Zero. But when I plug the cartridge with PRS board, Pi Zero doesn't start. No leds activity, nothing. When I put the microSD cart to Pi directly, it booted fine.
Someone in sale thread described similar problem, but that was related to damaged microSD reader. Mine looks and fits right. I've discovered the forum and found the advice to keep the wires as short as possible - did it without any result. Also changed PP8 and PP8 pins to 3v3 and ground pins from GPIO - no result too.
What's wrong with my wiring?