The lights on my 2008 harley davidson keep blowing when the bike is put in gear

SOURCE: REPLACINGTHE REAR TIRE ON A HARLEY DAVIDSON 2008 HERITAGE SOFTAIL

Down and dirty way - take it to the dealer and have them install a new tire....

The hard way: place bike on bike jack and remove rear wheel by removing the axle nut and drifting the axle out of the wheel. Derail the belt/chain and drop the wheel out of the brake caliper. Remove valve stem to deflate the tire. Get a set of tire spoons and a 12 pack of COLD brew cause working with tire spoons is no FUN! Pry the bead loose with one spoon and the work your way around the wheel prying the tire beed to the outside of the wheel. Repeat this process for the back side of the tire (in the same direction as the first side so the tire will come off the wheel. Reverse and repeat to install new tire.

By now you will be loading your wheel into the truck and heading to the HD shop. It just really isn't worth the hastle to save the $25 or so to have this job done.

Align wheel with new tire on it with the brake caliper so that you have one shoe on each side of the rotor (you may have to actually remove the caliper if your pads are thick. Install your belt drive/chain drive and then lift the wheel to insert the axle through the swing arm, the chain tensioner and wheel. Reverse
on the other side. Place axle nut on axle and torque to about 80lbs.

Good to go.

SOURCE: accessory fuse keeps blowing, headlight not working

I know this sounds aomewhat general, however please give the following some thought:
Check your relays, if you have an aftermarket horn you may have a different relay. To troubleshoot unplug your headlight, unplug your horn, etc.. Turn your ignition switch to accessory only. See if the fuse pops. If it does unplug whatever added accessories you may have still have plugged in. Once you can get the fuse to stop popping, turn the ignition switch to on. Then one at a time plug you accessory, headlight, etc. back in. When you find what pops the fuse, unplug that item, start plugging in the other items, if the fuse has not popped you have potentially isolated the circuit causing the issue. Now check the wiring for loose connections, bad ground, and CHECK the relay if that item has one. Hope this helps,

JP

SOURCE: Motorcycle wont start

Check your spark plugs, they are quite fragile & yoy may have a crack in the ceramics. Replacement is recommended.

SOURCE: Where is the fuse box or break light fuse on a 2003 harley

The square shaped box on the left side under the seat.

SOURCE: how do I replace a drive belt on a 1999 harley

On a Big Twin, you must pull the entire primary drive off the engine.

Disconnect the battery. Take the outer primary cover off the engine. Remove the compensator (engine sprocket) nut. This nut is very tight and has Loctite thread locker on it. 150-165 foot pounds of torque. You'll need to something to lock the chain up so the engine does not turn while loosening or tightening this nut. We use what is called a "locking bar". Remove the small plate with the screw and locknut in the center of the clutch assembly. Remove the mainshaft nut up inside the clutch assembly. It torques to 60-80 foot pounds LEFT HANDED TREADS. Remove the nut from the primary chain tensioner. Grab the compensator sprocket and the clutch assembly and lift the primary drive out of the cover.

Take the small screw out of the center of the jackshaft and remove the starter jackshaft.

From the right side of the bike, remove whatever you have to remove to get to the starter, exhaust pipes or whatever. Disconnect the battery cable and the small wire from the starter. Remove the two bolts holding the starter on inner primary cover.

Go back to the left side of the bike. Remove the four bolts that holds the inner primary to the engine, and the two that hold the primary to the transmission. There's one bolt coming in from the backside that has a braided wire on it on the early models. There may be four bolts holding the inner primary onto the transmission. When you have all the bolts out, the primary will come off easily. If it does not seem to want to come off, you may still have a bolt somewhere. Do not beat on the primary cover with even a rubber hammer. It should come right off.

Now, you'll have to remove the rear wheel, rear shocks, belt guards, and remove the swing arm.

As you can see, it's a pretty involved job on a Big Twin.

Good luck
Steve