a "jumper" is interconnecting wire, as in "jumping the battery" - a sketch:
front
|
w
|
i
|
r
|
e
|
driver light ----j-u-m-p-e-r---- > pass light

do you have single bulb/dual filament lights?
if so, one filament [brighter] is the brake light, which also serves as the turn light, one wire for each side from the signal unit [fed by the brake light switch] - the dimmer filament is the tail, one wire from the light switch, first to the driver side, also "spliced in" there will be a wire to the pass side, so 3 wires from the front .... if you have added on turn lights, there will be a different setup

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics