i bought 2 used aem gauges of a ht member last week. but i dont know how to conect them. the gauges are the BOST gauge and the AIR/Fuel Ratio.i know the black wire on both go to the ground. and that one of the other wires goes to the switch but were do the other 2 go to? can someone tell me. thanks!

 

or does anyone has the manual for both that you could please post. the boost gauge is the regular boost one NOT the truboost. thanks

 

the boost gauge needs to be taped into the intake manifold, the wires are:

one with inline fuse-12v power

one without = ground
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the a/f is taped into one of the 4 o2 sensor wires. find out which 2 are heaters and 1 usally green? goes to the ecu, tap and splice that one, for the guage output

 

thanks i found it on aempower.