VEVOR HS-660 - Page 7

Step 5: Use a 12 mm open-end wrench to
tighten the air pipe nut.
Step 6: Use 16AWG and
above copper wire to
connect the horn line, the
horn has two power lines
(regardless of positive and
negative terminals), one
base iron (negative
terminal), and the other one
is connected to the positive
terminal power supply after
the horn switch.
Step 7: Use copper wire
14AWG, 20A power switch,
20A insurance, connect the
compressor line, the black
line of the compressor to the
iron (negative electrode), the
red line is connected to the
positive electrode of the
battery through the power
switch.