Lightbulbs, coil, change. Electric motors will work and last except run to fast so horn sounds funny wippers go to fast and get the modern starter drive as the original one has a hard time handling the 12v hit. Used a 6 v starter on my vw buggy On 12 v for years never a problem. You can get a step down transformer from Snider’s for your horn. Sure saved a lot of dead batteries, boosting and most importantly SWEARING LMAO