you probably blew a fuse or burned a fuseable link i herd there is a mega fuse on the fire wall in the engine bay behind the coil pack on the v6

what plugs did you use?
you should only use autolite double plats


98 svt sil/blu 3.0 oval heads full P&P, msds headers,bat kit,2,1/2exhaust 30 inch glasspack and 2 spintech mufflers 14.78@94mph with my mechanical arm i can shift gears in less then a twentieth of a second for sale $7000