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Hi RF Krazy, I finished the truck, gotta take it in for an alignment at 8:30. I got the toe in/out set pretty close just eyeballing it, but the camber/caster adjustment is beyond me so I just set it like it was. Drives like a new truck again, even without an alignment. Alright, enough shop talk. When I get back, I will look over the schematic and give you some points to check.

So, from what I gather, when you soldered the connections wrong, you just tied the mic audio input to ground, right?

Do you think you may have applied echo board power to mic input when jumpering?

Gotta figure out what was fed to the mic input.

Say, do you have a scope?