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MegaSquirt MS I 2.2 Ignition Wiring Sketch - 1995 Ford Probe (Hand-Drawn)

Hand-drawn wiring diagram of a MegaSquirt ECU connector layout showing grounds, ignition and 12V power.

AI caption · Photo 12 of 1264

This is a hand-drawn (pen on paper) wiring diagram documenting a MegaSquirt standalone engine management installation, labeled "MS I 2.2" (MegaSquirt I, version 2.2 board) with the annotation "inverted: NO." The sketch shows a top terminal strip with two labeled connections (pin 24 and "fidle", likely fast idle), a round distributor-style component labeled "6-1", and several connectors with pin labels including B, R, E, N, and an unknown pin marked "?", plus pins labeled "c" and "x" on a right-hand connector. Two components at the lower left show pins labeled "w", "g", "c", "B" and grounds marked "(+) grd". A coil is sketched at lower right with (+) and (-) terminals, fed by "12v. from ign harness," and a separate wire labeled "12v. ign" runs off the right edge of the page. A reader can learn the rough routing of MegaSquirt ignition-input wiring between the distributor, igniter/connectors, coil, and 12V ignition power sources as installed on the uploader's vehicle, though no wire colors, part numbers, or formal pinout tables are provided.

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Frequently asked questions

What MegaSquirt version does this diagram cover?
The diagram is labeled "MS I 2.2", indicating a MegaSquirt I with a version 2.2 board.
Is the ignition input inverted in this setup?
No — the diagram explicitly notes "inverted: NO".
Where does the coil get its power in this diagram?
The coil is shown receiving "12v. from ign harness," and a separate wire labeled "12v. ign" runs to a connector on the right side of the diagram.
What pin labels are shown on the connectors?
One multi-pin connector shows pins B, R, E, N and one unknown pin marked "?"; another connector shows pins c and x; lower components show pins w, g, c, B, and two grounds marked "(+) grd". The top terminal strip shows pin 24 and "fidle".

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