I was told that i have to wire it to the ecm for a more accurate reading..... because of there only being one wire to the o2. anyone have any suggestions?

I've installed that guage in my RS, I hooked the signal wire with a wire tap to the Purple wire (D7) at the ecm. Using a wire tap keeps the original O2 wire intact, it just cuts the insulation a bit to the bare wire.. works great.. Along with the guage there are two other wires.. a Red one & black one.. I taped the red wire in with the power wire from the guages fuse, but make sure that you put a fuse holder between the guage and the power wire off the guage fuse. The Autometer guage requires a 5amp fuse, I used a 3amp, with no problems.. Since the guages fuse is 10amps... Then for the black wire I wanted to ground it with the dash ground, but didn't find it.. so for now I wired in a ground with a group of wires under the dash, just to the right of the fuse box. Hope this helps..

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89 RS Camaro, LO3 305 TBI
Cooling Fan Overide Switch
L69 Duel Snorkel Intake
Dynomax Ultra Flo SS Cat Back

That's basically what I did too, just to confirm that...it's not that bad, I just had to test all the purple wires because I didn't have an accurate schematic. :\

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1992 Camaro RS (Auto) 5.0L TBI
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Performance mods
NOS (125 HP shot)
Dynomax cat-back exhaust
Hedman headers
K & N open element/ X-Stream lid
MSD 6A ignition
LT1 camshaft
Soon to be installed:
Edelbrock intake manifold
3.42 rear axle
B & M 2400 RPM stall torque converter
Transgo shift kit
Moroso Blue Max plug wires
Torquer heads

Audio
Sony Xplod CDX-M610 head unit
Pioneer 2-way 4x6 front speakers
Pioneer 3-way 6x9 rear speakers
12 inch Pioneer VCCS PRO subwoofer
QLogic sealed box
Kicker ZR360 amplifier
Lightning Audio 1 farad capacitor

Other
Macewen White Faced Gauges/Shift overlay
A-pillar gauges (Phantom oil pressure, Air/Fuel)
180* thermostat
Window Tint

Can you wire one up without the ECM? I bypassed mine, and I'd like the guage for tuning the engine.

i should be installing it today or tomorrow thanks for the input guys..........

if anyone has anything different to add please let me know!

thanks