You might try looking at the wire harness that runs along the left fender, if i remember correctly its the main harness and think it goes to the engine computer. Water runs down between the fender and hood and soaks the harness and corrodes the wires under the cloth covering and tape. I found out the hard way after thinking the engine computer was bad when I had a no start problem, replaced the computer and no fix, did some more digging and unwrapped the harness to find a mess of corrosion hiding inside, did some wire repairs and all was good after that. This was on a '93 V8 Dakota.

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'67 & '68 Barracuda FB's
'70 AAR Cuda
'89 Ramcharger 4x4
'06 Ram 2500 CTD 6 spd

...Mopars are always way out back
Between the muddy river and the rusty railroad track
Yeah, the Mopars are always hard to find
But you can always find a few
There’s Cordobas and Furys and Darts and Dusters too
There’s a Diplomat with a Swinger
A new Yorker a Demon and a Scamp
And there’s a 68 Barracuda grill with both headlamps...Slaid Cleaves - Skunk Juice