I had an electrical issue so I trace it to 2 set of cable which wires were pealed and making contact. I decided to replace them but I'm not really sure which AWG size they are. So I'm asking you guys help me figure out which SIZE an AMP this wires could be.
I look through the FSM power supply wire diagram and the E.C.C.S. wire diagram for all this wires and found a lot of info but not so lucky with the size or Amp of the wires that are the following:

1. Coming from the fusible link, there's a Red (R) which goes to the injectors. I think this one is 14 Gauge (I compare the diameter of the original one, and a 14 and 16 gauge wire from auto parts store)

2. Coming from the E.F.I., white and black (W/B or B/W) which ends up at air flow meter (previous owner had the issue of air flow meter not turning off for like and hour after car was been turn off, so I want to think this was the problem), crank angle sensor, and apparently ECU. It's about the same size as the red one for the injectors so I think it's 14 gauge as well

3. Coming from EFI as well, Red (R) one but a lot thinner, this one goes to the ECU. I compare this one with a 18 Gauge wire from parts store and conclude the red one look even smaller (like 20 gauge maybe but I'm no sure) so I think 18-20 Gauge.
...... This 3 wires where unified into one cable. I have to replace like 1ft long for this 3 right after the fusible link and EFI relay....
Next, I have 4 wires coming from the Uphold Relay:
- Brown and white (BR/W), that goes into the Engine Room Harness and
- Brown (BR) that goes to both headlamps' motors (I was having the problem of headlamps going up and down without stoping when headlights turned on).
both BR and BR/W look the same size but since I have not compared this wires with a parts store one I'm truly guessing when saying they could be 16 Gauge(?)
-Black (B) for Headlamp Sensor; about the same size of the [3. Red (R) from the EFI] so I'm guessing 18-20 Gauge. And finally
- Red and Black (R/B) that goes into the engine room harness. This one looks slightly thinner that the BR and BR/W but bigger than the B; something like BR > R/B > B so I'm guessing 16-18 Gauge.

thanks for reading this far. My car is an 1984 z31 turbo stock engine and M/T, digital dash.
I'm gonna list the wire diagrams I looked through the FSM:
EL-28 Headlamp wiring diagram
EL-72 Warning lamps and chime wiring diagram
El-4 Power supply routing wiring diagramdiagram
EF&EC-8, EF/EC-9 E.C.C.S wiring diagram