Waterproofing the RR

Ok folks, I am new around the Rovers, but have been wheeling Jeeps(Ya I know, I'm stupid) and have the basics narrowed down, but have some questions.

Ok, so I spent 30 minutes reading through a bunch of threads I found here on Disco, problem is, MOST OF THEM ARE talking about DISCOVERIES!! Aghhh..

I have bought the material for a snorkel.
3" Flex pipe, 2 1/2 PVC and 2 1/2 breather cap. That is all in the plan.
I will be going out with Water resistant grease and will be liberally applying it to all bare connections I can see in the engine bay. Coil, etc.
I read about applying silicone to the wire cap. Ok, should I use a specific type, or will any do?

Now, in terms of computers and such. WHERE are they? I found something that looks like a computer under the passenger seat, what is that? Do I need to water proof it?
Where else do I need apply grease, or water proof? Where is the engine computer?

I am not worried about water going inside as all carpets have been removed, and tub treated, and drain plugs and such installed.

Thanks soo much.

Terry
1990 RRC SWB

Ok, excellent, thank you. I am currently in the process of making sure all holes in the firewall are looked after as per az_max.
Now, I was thinking of this:
Fill all the cracks betrween the plastic covers and the actual floor under the seats with silicone, that should keep it relatively dry me thinks.
Also, I will look at possibly using bags to wrap them up in just as a safet precaution. I don't plan on getting water inside if I can help it, but one always has to be prepared.

Any other suggestions or recommendations with rgards to this?

Not hi-jacking at all, you brought up a very good point.
I am going to go wheeling soon, and see whether or not I will need to relocate my computers and such.

I have been looking into possible options. All my doors rubber(around the frame) is fine, except the bottom of my drivers. I've been trying to come upw ith something, but nothing yet.

Yes, I removed all the carpets, grinded all the surface rust off and treated the floors with "Rust Check or rust Killer" or something like that.
Then I tucked the wiring and such(not much), and then used duplicolor Bedliner from Canadian Tire(its like pep boys and such). They are about 10$ a can, and I used about 2, applying really liberally in coats.
Once dried it is pretty tough. Haven't been able to scratch, but I use rubber mats. Also, I haven't noticed too much excessive heat entering the cabin, any exhaust funes for that matter. Noise was slightly increased though.