sunpro a/f gauge. why cant i get it to work? please read

04spoondc5

Member
:
2001 mazda protege mp3
4 wires to this thing. My ground couldnt be any better, right to the plate on the side of the head where other factory grounds already are. Im getting power from power window ckt in cabin fuse box, i have voltage there. I spliced into the turn signal/running light ckt right from the headlight, have voltage there as well. And on the 02 im spliced to the pink wire w blue stripe(signal wire). I used to the inline splicers that came with it and i cant even get the gauge to illuminate or do s***.
 
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