INSTALLING GAUGES..quick help

[LRS95TSI]

right now im installing an oil pressure gauge and an a/f gauge
1. their are 3 wires coming off the oil press gauge. black red and yellow... i got the black and red ran to ground and positive just like my boost gauge that i have hooked up. WHERE DOES THE YELLOW WIRE GET HOOKED TO?
2. what is the best way to put the gray wire coming off the a/f gauge into the hole in the ecu? i found where it has to go but there is a wire already in there. some type of fitter?
i decided that im just gonna run the o2 wire to the ecu and use the pos and ground wires with my existing gauges. meaning im splicing all threee gauges power and ground together.

please help in the middle of install...

 

[dave99gst]

im guessing the remaining wire goes to the sensor ?

and WTF are you talking about the 'hole in the ecu ? '
it sounds like you dont have all that much experiance with electrical, i would
have some friendly DSM'r help you out.

right now im installing an oil pressure gauge and an a/f gauge
1. their are 3 wires coming off the oil press gauge. black red and yellow... i got the black and red ran to ground and positive just like my boost gauge that i have hooked up. WHERE DOES THE YELLOW WIRE GET HOOKED TO?
2. what is the best way to put the gray wire coming off the a/f gauge into the hole in the ecu? i found where it has to go but there is a wire already in there. some type of fitter?
i decided that im just gonna run the o2 wire to the ecu and use the pos and ground wires with my existing gauges. meaning im splicing all threee gauges power and ground together.

please help in the middle of install...

 

[ShadowWulf]

Ok i just finished my install about 2 hours ago of those gagues.

Just splice the wire at the ecu, nice and neat and clean, and re-wrap the ECU bundle with electrical tape. Problem solved. Dont try and stick it into the Harness, which is what i think youre trying, i doubt it would stay or be very stable in the long run.

As for the Oil gauge, is it mechanical or electrical?

On an electrical one (mine) i have 2 power (+/-) then 2 more for ighting (+/-) Then one line that runs to the oil sender.