A jumper cable assembly has a pair of clamps at both ends for parallel connection
to a weak and a strong battery for starting a motor. Along the side of the assembly
is mounted at least one light emitting diodes (LED) that is powered when either
end of the assembly is connected with correct polarity to a battery. The at least
one LED may illuminate a fiber optic bundle disposed along the length of the assembly.
The assembly lights up along its length to thereby avoid tripping over it when
it is being used in the dark. When the assembly is connected to a battery with
the wrong polarity, the LED will not light up. In an alternative embodiment, a
plurality of LED's are disposed along the length of the assembly. The light emitted
may be made to flash or change color to indicate the voltage on the battery to
which it is connected.
