MAFs on most cars are a single (or couple/few wires) positioned vertically between the air filter housing and intake. There's always a plug that usually has one or two wires coming off of it. The wire has current running through it to maintain a constant temp. When air flow across, it raises or lowers the temp of the wire causing a change in the amount of current required to maintain constant temp. ECU senses change and regulates injector fuel input accordingly.

Here is a brief article...

73
-Jon
KJ6GVM

As seen on Expedition with TX plates: VEGETARIAN - An old Indian word for poor hunter

Grampa's Trooper
1974 FJ40
1987 FJ60