Yes you can replace a bike flasher with a car flasher . I priced the flasher from Honda dealer they want $80.00 plus tax for it I bought a standard car flasher for $4.79 plus tax and it worked. (flasher must be three prong - Prt.#550 12 volt 20-1036-2 from Can. Tire.) I answered my own question by trying it and it worked.
The flasher is under the l/h side cover beside the battery.
I think that it is under the r\h side panel cover
The turn signal flasher on a 1986 Honda Civic is located on the cabin fuse box. It will be plugged into the fuse box and its backside.
Next to the radio with the triangular (red) flasher symbol
Under the seat, good luck
headlight
The turn signal flasher relay on the 1999 Honda Odyssey is located under the driver-side dashboard. The relay is tucked near the cabin fuse box.
under the seat
The turn signal flasher on a 2008 Honda Civic 4 door is located under the dash near the pedals. It controls the flash interval for all turn signal indicators.
Check fuse box
the turn signals will not work
Most likely a bad turn signal flasher