No start

Truck won’t start no radio an gages come on just a have seat belt an door light On the cluster gage but replaced starter, new bat, new key ignition switch an still won’t crank an start but will crank an start if hot wired at ignition switch plug

 

Check battery cables, it's cheap and it's fixed so many people's 1st gens who didn't think of this obvious solution.

Specifically, make sure the cable from battery to the engine bay fuse box is good. Wiggle around the cable on the fusebox side and see if anything changes. Look for a YouTube video on how to get to the underside of that fuse box, a couple of guys here have had theirs arcing and short. Check the 120A alternator amp fuse. Check the actual power cables themselves for corrosion INSIDE the cable housing, that's been another aha. But given the description you gave, I suspect it's the lead between the battery and engine bay fusebox having an issue, or one of the larger fuses in there blown.

 

Checked all the fuses an cables coming off the bat are ok an good an installed a new ground cable off the bat just to be safe

 

And you're 100% positive the positive cables are good?

I'm just saying. We've had more than one person tell us "checked all the cables" only to spend hundreds more and find cabling issues.

Cables start to deteriorate at 15y+

 

I have its new cables on the positive side as well an have omed it as well just to check

 

Was it cranking good before ignition switch replacement ?

In case it helps others in analyzing, what conductors and what color are you jumpering when hot wiring ?

 

So at first I thought it was my battery an cuz it was five years old an that was the first thing I replaced but before this problem it was cranking fine an starting up well but now I have not thing an when I’m hot wire the truck I’m going from my thick black my two bottom thick blue an the bottom black an green wire

 

This part is the reason I suspect this is a power delivery issue. I suspect it's either bad ground, bad power, or something shorted in the engine fuse/relay box like THIS GUY found. There's at least one other case where a member found the positive battery line going to the interior fuse box was shorting and not sending power to the cab. Too bad it's such a pain in the ass to pop the box up and look at the underside. It's not that it's difficult, there's just a trick and an order to it.

This thread may be interesting to you for troubleshooting steps. I assume it's not the starter relay, but this post has a video that covers diagnosing that in our trucks.

Electrical issues are the worst to debug, but there are wiring diagrams here at the site on a year-by-year basis that can assist with troubleshooting.

 

That video helped out so much thank you issue fixed

 

In case others run across this problem, what was actually discovered and the fix ?

 

If you watch the video shifty sent there’s a 40A ami fuse in the engine bay that was blown that was keeping power from going to my key switch in the cab

 

AM1 fuse

 

Now lets see if @70jesse watches the video after checking the other prerequisite stuff to check and fixes their problem....

 

That’s the one an I went ahead an replaced the 30 just in case but after that turn the truck on an found out my alternator was bad