So I finally got all the stuff together to hook up my gps to my empeg... and I'm not getting power. metering out the serial port shows me +5V/+5V/-12V/0V/0V on pins 1-5. This doesn't seem right, especially the part where pin4 isn't supplying 12V as advertised. My serial# is 8<some number of 0s>298. Am I likely to have the missing ground pin in my sled? Could that be the problem?

Any help appreciated.

--pj