Hi Nailbender,
Are you an apprentice carpenter, or maybe you work at Guantanamo Bay?
I'm using the late model 850 schematic, prob OK for S70.
How to check wiring:
The Black wire at the driver headlight wiper connector needs to connect to the battery Negative. Check with your ohmmeter that you have a solid connection.
Maybe your ground lead crapped out?
Check other two wires for +12V DC.
The piggyback wires at the battery terminals need occasional attention.
Pull them all off, shine them up and reinstall with Penetrox-A or conductive
grease (copper or nickle anti seize)
Look for loose or corroded terminal ends, and repair or replace.
Good luck, Bill
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