man, if you cant find the battery -- put down the wrench -- step away from the motorcycle -- and take it to a shop. if you turn that wrench, it'll cost you more in the end. but its under the seat, in front of the conuter valve.
D
For a 1998 Harley-Davidson Road King, you typically need a maintenance-free 12V battery, specifically a group size of 27 or 20. The most common option is the Harley-Davidson OEM battery, which is a Yuasa YTX20HL-BS or similar. Always check your owner’s manual for specific recommendations and ensure the battery meets the required specifications for your motorcycle's electrical system.
Inside the tank.
.040"
Yes
A link to many wiring diagrams for Harley-Davidson vehicles is in related links.
3000
Stock Harley plugs works as good as any.
69 hp
under the seat within the inside diameter of the oil tank
40
5 or 10 psi
41mm