June 30, 2004
Thanks for the compliments!
The switches are for:
1. Fog lights
2. Driving lights
4. Aux back-up lamps
5. Spare...Soon to be bed/toolbox lights
So far as the pyro probe goes, there are 2 options...One is to remove the manifold and bench drill it. The other is to drill it in place, which is what I did.
If you choose to drill in place, DO IT WITH THE ENGING RUNNING! This way the chips are blown outward as they break free. Use cobalt bits, lots of cutting fliud, and drill slowly. Wear safety glasses, as the chips will fly outward.
Drill a 3/16" pilot hole, then follow with the final size bit. Size "R" if I remember correctly.
When tapping the threads, again use lots of cutting fluid (again with the engine idling) and turn the tap about 1/4 turn, then back off so the chips will break free. Tap the hole approx. 1/2 the distance of the tap's cutter length and test fit the bushing. The bushing is NPT threads, so it doesn't need to (nor do you want it to) thread flush with the manifold. About 2/3 of the lenth of the bushing threaded into the manifold is ideal.
The driver's side is easily accessed by removing the fender liner...The driver's side must be accessed from under the truck.
Drilling and tapping slowly is the key to success! Don't be in a hurry, and it will work fine for you.