your signal sw should have the same wires as the new 6 wire harness or you don't have a factory signal unit - or maybe you have 'add-on' signal lights? .... here's a factory unit and this is the wiring schematic

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