Alright guys I got a Prosport Electric Boost Gauge on my 07 WRX

There are NO leaks...I double and triple checked the connections..

I'm hoping that it isn't a faulty sending unit.

When I had it on for the first month it worked perfectly fine. But one day I really got on it and then it just stopped working. Every once in a blue moon it would come to life and work again....and every once in a blue moon it would jump up and read some boost when I boost it, but then just go back to dead (25 inHG i think)

other than that, its just dead alll the time. I wondered if it coulda been the way I wired it.....its powered and grounded directly to the battery...

any advice?