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Swap the bulb from right to left to rule out the bulb to begin with.How many brake light bulbs are there and are they the same bulbs as tail/park lights and if so are they 2 filament?
Do you have a voltmeter? Do you have the wiring diagram?
Ok, so it's just the left front turn signal that don't work, or is dim and barely flashing?
Plus, the stop lamps don't work at all?
How many brake light bulbs are there and are they the same bulbs as tail/park lights and if so are they 2 filament?
using the voltmeter check how many volts are making it to them left front bulbs.
Check how much to the stop lamps, too. If exactly zero, check again exiting the stop lamp switch and check the fuse.
Is this the 6.4L or 7.0L Engine?
So this is not the original engine?
I want to look up the correct wiring diagram, so I need to know what the original engine was or give me the vin.
Hold on, autozone says it only had the 6.4
Next, is this a convertible or hardtop?
here are the 2 wiring diagrams,
Check for voltage exiting the light switch and the turn signal switch. Follow the color wires, they should be the green/white at the turn signal switch and the black/yellow at the light switch.
Also, I found the stoplamp switch. It's a green wire coming out going to the turn signal switch. test it for voltage with the brake pedal pressed down and key on run, engine off.
Check the fuse for the stoplamp.
You have a voltmeter, why aren't you actually testing both sides of the fuse for voltage so you know where to test next?
If there is actually no voltage to the fuse, that is a problem in between the fuse box and battery, including everything in between. If you simply looked to see if the fuse was blown or not, that isn't a good enough test when diagnosing problems, Simply looking at fuses is ok when you are on the road and have no voltmeter or test light.
Great, let me know when you have the results.
Do you still need help with this?
Ok, well let me know when you get back. This post will close though 7 days after it was opened, so that's March 12, 1:07 PM.