24V wiring diagram of a bj73

[angliadeluxe]

hello there!
desperately looking for a wiring diagram of my bj73, cause i cannot connect my new radio. It's a 24volts system!
There are two 12V wires hanging out of the board, that gives current after turning on the ignition. I dare not connect a new wire on the fusebox, cause i have no 24volt testing lamp.
any hints?

 

[HZ Cruiser]

Why not just use a 24/12 converter? You can find them on eBay for dirt cheap.

 

[HZ Cruiser]

OR

If you want a really good one, you can order one from
Steve - Extremebends.com | Landcruiser Toyota Parts and EBI 4x4 Accessories
or
John - Customization and Restoration Professionals - Services For Restoring 4x4s - RADD Cruisers, Duncan BC