Hi,just purchased from a friend some Autotechnic S7 gauges and need help wiring them.THe Boost Gauge has 3 wires,red,black,and a purple colored wire(dont know where the purple wire hooks up to).the Air /fuel gauge has 4 wires,red,black,purple and a light green wire.Where does the green and purple wires hook up to?Any help would be appreciated,thanks!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by joker420 &raquo;</TD></TR><TR><TD CLASS="quote">Hi,just purchased from a friend some Autotechnic S7 gauges and need help wiring them.THe Boost Gauge has 3 wires,red,black,and a purple colored wire(dont know where the purple wire hooks up to).the Air /fuel gauge has 4 wires,red,black,purple and a light green wire.Where does the green and purple wires hook up to?Any help would be appreciated,thanks!! </TD></TR></TABLE>

My autometer air\fuel has a red, black and purple, a boost guage wouldnt have just 3 wires from what i know.

 

Purple is probably the illumination wire. Hook that up to the red/black wire. The light green wire hooks up to the O2 sensor wire.

 

the purple wire goes to the red power wire?Or does it hook up to the dash lights?