Go to www.the12volt.com they will have your wiring diagram for free.
I just got a free copy from my local dealer.
harley davidson radio wiring schematic
When they get their web site fixed, you can see one at AUTOZONE.COM
It is important to have a diagram when making any changes to a car. For this car a free vacuum diagram can be obtained through asking an auto part store technician for a print out of the schematic.
autozone
2006 Harley alternator regulator schematic wiring diagram for a 1996 harley softail
http://www.e-gunparts.com/productschem.asp?chrMasterModel=0860z788
At a Chevy dealer
An additional service manual and wiring schematic for an A1990 Kawasaki ZX6 motorcycle can be found on eBay as well as at specialty motorcycle dealerships.
A free wiring schematic for this car can be found in the cars manuals. A person can also ask for its print out at an auto part store.
For a 1990 Nissan 240SX, the heater hose routing involves two main hoses: the heater inlet and outlet. The heater inlet hose connects from the engine's water outlet (usually near the thermostat) to the heater core, while the outlet hose runs from the heater core back to the engine block or water pump. Ensure the hoses are properly secured and free of kinks for optimal coolant flow. For a detailed diagram, consult the vehicle’s service manual or an online repair guide specific to the 240SX.