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Tachometer installation 3.3l v6

Old Sep 21, 2024 | 02:41 PM
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Default Tachometer installation 3.3l v6

Trying to install a aftermarket tachometer on a 93 Buick century 3.3l v6 and don’t really know what I’m doing and want to do it correctly what do I do any advice would help me greatly
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Old Sep 21, 2024 | 05:30 PM
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What kind of tach is it? Does it work with a feed from the crank sensor? Does the tach have any info.
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Old Sep 21, 2024 | 06:30 PM
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Originally Posted by carfixer007
What kind of tach is it? Does it work with a feed from the crank sensor? Does the tach have any info.


bosch tach

Green wire: top right paragraph mentions rpm speed signal? I assume that!

Green wire connection: Bottom right paragraph
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Old Sep 21, 2024 | 08:47 PM
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The crank signal should work.

Operation CHARM: Car repair manuals for everyone.
Home >> Buick >> 1993 >> Century V6-204 3.3L VIN N FI >> Repair and Diagnosis >> Powertrain Management >> Diagrams >> Electrical Diagrams >> Ignition Controls

Ignition Controls

Wiring Diagram:




pro multis · About Operation CHARM
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Old Sep 21, 2024 | 09:04 PM
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Old Oct 11, 2024 | 09:00 PM
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Default Tach


Just want to be sure I should tap into the crankshaft wire black/white pin (N) or would I use the tachometer input wire pin (E)
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Old Oct 11, 2024 | 10:37 PM
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Use the tach E
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Old Jun 12, 2025 | 08:31 PM
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Tach pin (E) didn’t work work crank pin (N) didn’t work but ignition wire did pin (A)
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Old Jun 12, 2025 | 11:28 PM
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I see now that is the tach INPUT and not output. Yeah. Ign is good.
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