Hey oldiguana, that sounds like a head-scratcher with your Leisure Drive conversion. Here's what I can suggest to help you troubleshoot the 12v situation:
Double-Check Battery Readings:
Multimeter: First things first, grab a multimeter if you have one. Double-check the voltage readings directly at the battery terminals (not just what the gauges are saying). 26v on a 12v battery system is definitely not right.
Battery Condition: Even if the voltage reads slightly high (around 13v), it could indicate a battery on its way out. Consider the age of the batteries (1999 suggests they might be nearing the end of their lifespan).
Following the 12v Trail:
12v Fuse Box: See if your Leisure Drive has a separate 12v fuse box. It might be hidden somewhere inconspicuous. Check the fuses for any blown ones that could be interrupting the 12v supply.
Isolation Switch: Some Leisure Drives might have an isolation switch that disconnects the 12v system. Make sure it's turned on if present.
240v to 12v Converter:
Possible Converter Fault: It's possible your Leisure Drive has a 240v to 12v converter that's malfunctioning. These can fail over time. If you can locate the converter (might be near the fuse box), listen for any buzzing or humming noises that could indicate a fault.
Additional Tips:
Professional Help: If you're not comfortable troubleshooting electrical systems yourself, consider taking your Leisure Drive to a qualified auto electrician familiar with campervan conversions.
Safety First: Be cautious when working with electrical systems. Always disconnect the batteries before tinkering with any wiring.
Hopefully, this helps you pinpoint the source of the missing 12v in your
voojio Leisure Drive. Good luck and happy vanning!