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Sea ray 5" Replacement Tach fir 1991 390EC |
September 13, 2021 |
Reviewer:
John Linsey from Grand Rapids, MI United States
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Ordered two of the replacement tach 2nd day FedX. Arrived on the second day as promised. Installation took about one hour. The port side was done in 15 minutes but the starboard side SEND wire had to be lengthened. Please Note: The gauge is almost identical to the original with the following acceptations: the IGN and SEND posts are reversed from the OEM. Starboard SEND wire had to be lengthened. The GND post was on the outside of the IGN and SEND posts, not on the inside as shown in the picture. The depth of the gauge housing is twice as deep as the OEM, which did not create any problems for this installation. Adjusting to 8C (cylinders) and 4P (pulses) for each was all the adjustments that had to be done. Other than the cost, they are great tach's.
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