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Where is the C-3 diagnostic lead on a 307 olds on a 88 Cadillac brougham?
Wiki User
∙ 13y ago
It is available at the ALDL connector, terminal 'B', located under the instrument panel, just right of centre. Terminal 'A' is ground, so it is possible to use a short jumper to ground this terminal.
Wiki User
∙ 13y ago
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