Classic Cars & RestorationDiscussionCommunity Starter

Question: Old car was converted to 12V years ago — wiring is a mess

TruckTravelerCommunity StarterOct 16, 20252023 Audi S5 SportbackDallas–Fort Worth
2023 Audi S5 Sportback, about 14,500 miles. Picked up a classic that was converted from 6V to 12V by several previous owners. It works, but the harness has splices everywhere. Would you repair sections or start over with a modern fuse panel and new harness? Trying to diagnose before I book a shop.
permalink

1 replies

EcoBuilder27Community StarterCommunity StarterOct 16, 2025permalink
Charge curves lie if you don't match starting SOC and temp. Match starting SOC and battery temp if you're comparing 2023 Audi S5 charge sessions. Then you'll know the next fork. Any freeze-frame data saved? I refuse to clear codes until someone else sees them.
Sign in to reply

Similar discussions