1973 ford pickup I beam rubber grommet - 1981 Ford F 100

See this video

https://www.youtube.com/watch?v=IiIWfoEwwqI

Yes it will bolt up.

Try & find a piece of that harness in the salvage yard

It will save you having to work on the terminal ends

ALL headlights have vertical and horizontal adjustments. The vertical may be obvious, an M8 shaft. Horizontal may be non obvious, or the adjuster is covered with a rubber grommet. Once you've located the adjusters, find a wall eve on mall car park, and see the low beam to the same height. Check high beam, and a just the horizontal as needed.

No big Deal! The grommet is just a groove rubber O Ring. Pry out the remains of the old one, lube the new one with silicone & push it in, Clearance is your only obstacle.

If you have a wet seat then it is likely defective weather stripping around the window.

Try this. If the floor is dry, then it rains and the floor remains dry, only gets wet after a drive in the rain or on wet streets, you may have a hole somewhere.

Check for holes from missing rubber grommets or holes in the floorboard or firewall from rust. Check for any rust holes or missing rubber grommets under the car or on the firewall, anywhere water can splash up into the vehicle from driving in rain or running through puddles..

Check wet spots along the carpeting all the way up under the dash, if the wet spot is higher than the floor itself, you could be getting the water from splashing through puddles.

Any holes under the car or in the fenderwell even up on the firewall can cause this problem.

First check for any obvious signs of rust, if none are found then look for missing or defective rubber grommets.

3RD GEAR IS THE DIRECT CLUTCHES . WHEN THE GROMMET BROKE YOU LOST LINE PRESSURE IN THE TRANSMISSION RESULTING IN BURNING THE CLUTCHES .THE ONLY FIX IS TO REBUILD OR REPLACE TRANNY.BAD DESIGN BY FORD .YOU CAN FIND A BRONZE ONE AFTERMARKET

your owner manual will list the bulb. It is expensive. tascafordparts.com for discount from Ford Dealer

here's 2003, don't have 2004

Navigator high intensity discharge (HID) headlamp

1. Remove the front radiator air deflector.

1. Remove the three bolts and the headlamp assembly.
• Disconnect the electrical connectors.

8. Remove the headlamp bulb protective cover(s).

• Remove the HID lamp cover.
• Remove the high beam cover.
• Disconnect the electrical connector and push the grommet into the headlamp assembly.

1. Release the spring tabs and remove the HID low beam bulb.

Problem is most likely the gaskets and isolator bolts between upper and lower intake manifolds.
Look at the rubber grommets on the bolts that bolt the upper intake to the lower. If they rubber grommets are black then this is most likely the concern. They have a new style gasket and bolts for this and the ford part number are XF2Z-9H486-AA for the gaskets and 3F2Z-9S479-AA for bolts (1 pack of 8 bolts).