DieselRx DRX01001 Glow Plug Controller for Ford 7.3L IDI (Some 6.9L) - Pack of 1 DRX01001 Glow Plug Controller for 1988 To 1994 Ford 7.3L IDI (Some 1987 6.9L) Highest Quality Controller Available None Better Anywhere MADE IN THE USA ONE YEAR UNLIMITED MILEAGE WARRANTY FREE SHIPPING