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eec60pin_hole.jpg My EFI harness goes in to the firewall between the throttle cable and the fuel pressure regulator.  The EEC then mounts under the dash.  The was all stock on the 1986 EFI trucks.  I don't know why progress was to mount it outside closer to water damage in 87 and up?
eec60pin_hole.jpg | Hits: 1084 | Posted on: 6/29/03 | View original size (48.16 KB)

My EFI harness goes in to the firewall between the throttle cable and the fuel pressure regulator. The EEC then mounts under the dash. The was all stock on the 1986 EFI trucks. I don't know why progress was to mount it outside closer to water damage in 87 and up?