I took good used ones off a 99 XJ 4 door that I parted out.
If you're looking to replace the original that's fine.
For reducing wind noise, there's another fix or 2.
I checked it by way of driving, and all is normal lol. But no, I didn't measure resistance. I will to appease curious minds, though.
Meh, I'm sure the solenoids require a certain amount of juice to operate.
Look on the side of the trans and see if there's a deadended 2 wire connector, which if it were about a foot longer would plug into the switch on the transfer case.
NEVER trust it as a parking brake!!
One of my employees did and a medium duty flatbed tow truck of mine went down the hill and into a house as a result.