1994 IH 9400 - Splitting up a magnetic switch relay to 2?

Truck is 94 international 9400, with cummins n14.

Is this possible? Ive been replacing these probably once a year or some twice a year for a while now. Its the big solenoid behind the passenger dash that looks like a starter solenoid. Part number is 2004464c1. Problem im having is after some time they trip or get stuck, causing everything thats 12v key on to not work. Radio, a/c, passenger window, wipers, squirters. The top lug is 12v constant, the bottom lug is 12v key, the very small stud to the right i believe is also 12v key.

What im wondering is if i can buy a 2nd relay exactly like it, and run just my a/c wire to the 12v key on stud, and run a jumper wire from thr original 12v stud to the 2nd relay 12v stud. Is this possible? Maybe i can try to pin point why this keeps happening, very irritating

 

My issue is everything thats 12v key on is acting up lol. I know its tied to this solenoid, i just dont know why its doing this. To be honest i wish i could seperate every one of those 12v key on things to its own solenoid, but thats impractical. That would really tell me which one is causing the issue.

 

Sounds like its a common issue lol. I need to look into this more, maybe by unplugging some of these and seeing if it makes a difference, but im going to try a 2nd solenoid for now.

Would a simple jumper from the 12v constant stud on the original to the 12v constant stud on the 2nd solenoid be okay? What about a jumper from the little stud? Im not exactly sure what does, or if its needed for the 2nd solenoid?

I have some spare 8 gauge wire i could use for the 12v constant jumper

I looked into the cole hersee ones, they arent expensive at all..and they even go up to 200 continuous amps, but they are shaped differently to mine and the mounting was also different.