Check out the related links section for a video on how to instal a Ford F150 Triton 4.6 liter alternator.
The 4.6 L Triton wasn't used in the F-150 until 1997
www.motorcraft.com shows .054 inch
1998 ford f150 5.4 liter v8 triton 4x4 20 amp fuse is not blown but has no power to it for the trailer stop & turn but has running lights
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford F-150 ( V8 )
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
.054 inch
Only on the 4.2 liter V6 engine , the 4.6 liter and 5.4 liter are Coil On Plug ( C.O.P. ) ignition
on top of the spark plugs in the intake manifold.
.054 inch ( according to motorcraft.com )
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front The spark plugs are under the ( 8 ) individual coils
The 1999 F150 4.6 L is rated at 220 H.P. at 4500 RPM and 290 lb/ft torque at 3250 RPM