Pre-OBDII Code Reader

Can someone point me in the right direction to find info on how to pull the trouble codes from the computer of a 1991 Merc. Topaz without purchasing a special reader/scanner?

Steve

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Steve Mackie
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Steve Mackie opined in news:_uOdnXVZv snipped-for-privacy@rogers.com:

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Backyard Mechanic

thanks

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Steve Mackie

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