If it was starting before the OVP sounds like the No-Start culprit. Are you sure the pins were clean and securely plugged back in? You might alson check the fuse box for a failed fuse (I think it might be #7). The fuses corrode and get hairline cracks frequently: look O. K. but won't conduct.
Why were you checking the OVP anyway?
Al

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2007 Mini Cooper 4K miles
1993 300E 2.8 120K miles
1961 Morris Minor 42K miles
1965 Morris Minor 23K miles
1997 Ford F150 235K miles
1987 Ramcharger 202K miles
1984 Chevy C-30 farm truck 88Kmiles
1968 XKE 59K miles
2001 Harley Softtail
2003 Harley Roadking