your best bet is to contact california mustang and get the ford wiring diagrams for the 88. this way you can know where all the wires are and where they go.
__________________ 1975 Mustang II V-8 Coupe, 1985 GT Hatchback stock, 1986/91 SSC/GT Hatchback, 1988 GT Convertible personalized, 1993 LX 5.0 Hatchback, MCA stock,photos in Mustang Forty Years and Mustang Four Decades Of Muscle Car Power, 1969 Cougar XR7 (eliminator clone), 2006 Dodge Charger Daytona R/T #996 (the wife's toy) 1999 Dodge Dakota R/T 5.9
got nitrous? only babies, and little boys with bowties use bottles!
they can take away my keys from my cold dead lifeless hands, if they can catch me first | 
Where have all the grounds gone? 
