The factory manual even lists high altitude options as well!
SOR has just been around longer than most and their site is a pretty decent reference starting point and it also at least gives you the idea of cost if they aren’t your first choice for new parts.
The proper jet sizes are in the manual and is pretty self explanatory once it’s in your hands. Also, SOR offers new jets if any of yours are not in the right range.
No zinc in Macropoxy 646. If you wanted a little more corrosion inhibitors you can use Epolon 2. Both of these are epoxy high solids primers that are very tough and very durable meant for way harsher climates than your average automotive epoxies. Wouldn’t expect much price difference between...
You’ll find lots of different opinions on this. I know I’ve already said this prior and I’m sure got some scowls at screens due to it but… facts are facts.
POR15 is marketed to folks trying to cut corners and they are handing you the torch to see your way down the dark path. Improperly prepped...
Switch wouldn t typically need to be grounded in order to work. The ground is found on the other end of the harness at the bulb.
Can you check power on each bulb on both circuits high /low beam?
Newer year hood, brown front fender or fenders and a wrinkled under hood tag means it was in a collision of some sort. That’s my guess. Still a super rust free looking truck. Post pics and keep digging in. Lots of mechanical refreshing you can do now that it’s starting to come apart. Enjoy it...