$49.00
In stock
MS3Pro ULTIMATE adds nearly 50% more I/O with the addition of a third AMPSEAL 23-pin, 8′ flying lead. Harness arrives with color-coded, printed wires per the pinout below (black center connector)
***Center Harness ONLY in this listing, intended for people upgrading from MS3Pro Evo with no other changes needed, or from MS3Pro Gen1 (which requires only a few changes to wiring on the white/grey connectors)
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Is the center connector required to run MS3Pro ULTIMATE?
No, but why leave nearly half of your available inputs and outputs on the table? At MINIMUM, pin #23 of the MS3Pro ULTIMATE must be connected to 12V+ battery power. See pinout for I/O possibilities with the center harness.
Many older tachometers trigger off the negative terminal of the ignition coil. Often, these use a filtering circuit which will not trigger when given a 0 to 12 volt square wave signal, such as the tach output signal from an ECU or ignition box. If you h...
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The MS3Pro ECU’s feature user-replaceable fuses that protect against voltage spikes and other abuse. To replace these fuses, use a needle nose pliers to pull the fuse out of its holder, and then push in the replacement fuse by hand.This is the 6000m...
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Making your own harness? This plug and pin kit features the MS3Pro AMPSEAL white & gray connectors plus 75 pins- more than enough for making your own MS3Pro EVO or 1st Gen harness.MS3Pro ULTIMATE 3-connector AMPSEAL Kit available here
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Planning to make your own ULTIMATE harness? This plug and pin kit features the MS3Pro ULTIMATE AMPSEAL white, black & gray connectors, plus 100 pins- more than enough for making your own!(EVO/ 1st Gen 2-connector AMPSEAL Kit sold separately)
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High quality USB to RS232/Serial/DB9 adapter for use with any/all of our products if your laptop doesn't have a DB9 port. This is probably the most common item we see people come back for after a purchase, so we highly recommend grabbing one now! We h...
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High Quality 4' Relay Board cable for connecting your MegaSquirt ECU to your Relay Board.Works with MS1, MS2, or MS3, all standard main boards (includes not just the IAC and ignition pins - it also has the spare pins on 3 through 6). It has a shielded...
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1 review for MS3Pro ULTIMATE Center Harness