I do not think my fog lights will cause it, if I recall correctly the fog lights are on whenever the headlights are not on. (DRL?)
The rear defrost will not induce the fault.
I am pulling the fenders to deal with some lower a-pillar rust/windshield rust next week. I will check the grounds at the same time.
After reading that reply I think I should also pull some fuses one at a time to see if I can narrow the source.
Having priced spark club cables I am glad I have pretty much ruled them out. Unless they leak more at night.
