Trying to replace the terminals and battery cable to a 98 dodge d

I don't know, use a tape measure and measure the length. Your local auto store may have the correct cable. In the past, I have made my own cables, I used the old cable for size and length as pattern, then put new ends on it. The auto store has that type cable on spools, you just tell them the length and size and they cut it to length. I'd have to look at your cable, some have sensors. I'd have to look at it.
As far as the cable, if you crimp new ends, make darn sure you get a good crimp on it.

Size 24 or 27. I found this on the AutoZone website. You can too.
Good luck!

Are you sure you need to replace the entire cable or just replace the terminals that the cable is connected to?The terminals may be worn out and loose which leads to corrosion. Simply go to an auto parts store and buy the appropriate terminals and replace them. You can also get a wire brush to clean the cables before installing the new terminals. Also there are some corrosion protectors that help aid in corrosion.

battery replacement cables can be obtained from any auto electrician--auto spares stores and the parts dealer for you unit. All you need is the old cable to obtain the correct length, cable size and terminals configeration

There is a master fuse in the engine bay on the left side in a box where all the high demand fuses are located.. I would look there. It would be a big size colored twin blade fuse.

Have you ruled out that the starter has gone bad? With use and age, the armature can sieze in the motor, essentially making the motor useless even though there is voltage applied to it..

Write me back if you require further advice..

Before disconnecting the positive cable you must disconnect the ground cable first to avoid short circuit that may blow up some of the fuses.

To remove the positive cable you must have a wrench that has a size either a 12 mm or a 10 mm. just turn the wrench counter clockwise.

The other end of the cable will usually go to the starter and the alternator.

hope this one helps...

Bad Starter or solenoid, Corrosion on Battery or Starter terminals, could be a bare battery wire, Bad Battery !

There are two types of batteries in use today. Top terminal type is found on top of the battery normaly found in older cars. These are metal posts that on the battery and the cable terminals has basically a metal clamp that fits over the battery posts and is tightened to create a good contact. To remove the terminal end from the post loosen the nut on the bolt and insert a good size screw driver into the clamp so as to wedge it open and free it from the battery. Trying to pry the clamp up off the post could easily damage the battery. The least amount of force applied to the battery post the better. There is actualy a puller made for this very purpose and can be found at most auto parts stores.
The side terminals are, as the name indicates, are located on the side of the battery. Unlike the post on a top terminal battery there are two threaded bolt holes on the upper side where the cable eye terminals are attached. This only requires the removal of the bolt with the proper size wench.
In both cases the other end of the negative cable is normaly attached to the engine block for a ground. You just have to loosen the attaching fastener and replace the cable end. The positive end in most cases is attached to the starter but just follow the cable to it's attaching point and remove the fastener and replace the cable. It always advisable to coat the terminal ends with and electrical sealer made just for this purpose that can be purchased at any auto parts store.