What did you do and why? Are you able to know if you did it right?

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra

I partially rewired the mass airflow sensor connector because the heat melt the insulation and they were touching together, and i am pretty sure that i rewired it correctly, i am trying to think why am i keep on getting the p0132 and p1131 because i replaces both 02 sensor with oem parts and mass sensor and catalytic converter magaflow. and still getting those codes. I am getting horrible gas mileage.

Well, I am in electronics, and there is a difference between sure and pretty sure.

Was 1995 the year with the decomposing wire harnesses?

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra

Yes, but i recently intall a new engine wiring harness in the car.The insulation of the mass airflow only melt around the engine compartment and i had rewired it from there to where the insulation were burn. And it's not the mass airflow that is giving me the check engine light. it's the 02 sensor before the catalytic converter that keep on giving me code p0132 and p1131 and here is a link they give me to do the measurement, but seem complicated don't really know how to start http://www.startekinfo.com/manual/volumes/e3/8_6/m11.jsp