9
finding the wires you need
Now that you have decided where each component will be located, you’re going to find the wires
in the car that the security system will be connected to.
IIMMPPOORRTTAANNTT!!
Do not use a 12V test light or logic probe (computer safe test light) to find these wires! Use a dig-
ital multimeter for all testing.
obtaining constant 12V
We recommend two possible sources for 12V constant: the (+) terminal of the battery, or the con-
stant supply to the ignition switch. Always install a fuse within 12 inches of this connection. If the
fuse also will be powering other circuits, such as door locks, a power window module, a headlight
control system, etc., fuse accordingly.
IIMMPPOORRTTAANNTT!!
Do not remove the fuse holder on the red wire. It ensures that the control module has its own fuse,
of the proper value, regardless of how many accessories are added to the main power feed.
finding the 12V switched ignition wire
The ignition wire is powered when the key is in the run or start position. This is because the ignition
wire powers the ignition system (spark plugs, coil) as well as the fuel delivery system (fuel pump, fuel
injection computer). Accessory wires lose power when the key is in the start position to make more
current available to the starter motor.
To Next Page
Loading...
