im in the process of grounding my 88 t2 and have a question about the boost sensor ground.everywhere i look on the net they say the brown wire should be grounded(but not which brown wire), but looking at the mazda diagrams, and my multimeter,it seems like the solid black wire is the ground. wtf? i just dont want to fry anything.if anyone knows i would be very grateful.thanks in advance.

 

when u ground, do u jus tape the wire on there, or what?

 

just because the black wire is grounded now doesn't mean it will stay grounded when runnung..or the boost is up or.... Brown is the standard color for the grounds...

 

thats a very valid point! so would it be the brown/red or the brown/white wire? they both seem to go to the ecu, in the book.