Foglamps
I seem to recall 2 threads, as of late, where the owner tried this, and after installing the fog lamp relay, the fog lamp relay fuse, and fog lamp fuse, they still did not work.
Seemed like there was part of a harness missing between the headlamp switch and the fuse panel.
Don't know if you want to dive into it, and buy the parts. If so, let us know and we can get into it.
You will need to buy a new main headlamp switch for a 1998 MY truck ( not one for a '00+, they are different switches ).
Here is the 1999 EVTM 86-2 ( fog lamps ) which is the same as 1998 :

Here is the 2001 EVTM 86-2, where you can see the differences between them :
Seemed like there was part of a harness missing between the headlamp switch and the fuse panel.
Don't know if you want to dive into it, and buy the parts. If so, let us know and we can get into it.
You will need to buy a new main headlamp switch for a 1998 MY truck ( not one for a '00+, they are different switches ).
Here is the 1999 EVTM 86-2 ( fog lamps ) which is the same as 1998 :

Here is the 2001 EVTM 86-2, where you can see the differences between them :


