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You know me, I get carried away.

There are soooo many resources on this topic. Look around this forum and you will find countless posts with the answers you’re looking for. here’s a great video explaining some basics: https://youtu.be/d0weBe8J58s

@hawairish I just wish you’d be more precise & specific [emoji16]. Always a pleasure to read!

Post history shows you’ve already started a thread on this exact question in April and got great answers......

So they were fairly easy to replace. Didn’t encounter any issues. Took about 45 minutes. The old ones were very bad. The clunking seems a lot better. However ever so often I still get a faint clunk when driving. more often going into driveways or parking lot entrances

@TheGhost Since you have the MT, we can clear up the diagram on EL-86 a little, but I also think we're dealing with a couple small discrepancies. Keep in mind a lot of these diagrams also show items you might not see on your truck. Here's the breakdown of EL-86, with the bold harnesses IDs being what you should expect to see on your truck: 1E = Typo #1. It says "M/T Model", but EL-81 says harness 76M is for "VG30E engine A/T model". EL-44 shows 1E as having 6 wires for AT, and you've indicated there's 8 wires. So, this won't be on your truck. See 5E. 2E = "Back-up lamp switch", found on MT-33 as "Reverse lamp switch" on the OD gear case. EL-30 says it has white/black and red/black wires and confirms as using harness 2E, and that harness 5E has 8 wires. The inhibitor switch on an AT provides the reverse signal, which is likely why 1E is 6-wire. 3E = "Neutral position switch", also on MT-33 by the same name, also on the OD gear case. As such, this is the neutral switch for the transmission. More on this later... 4E = "Transfer switch" aka "4wd switch", per EL-44. This should be your rear-most sensor, or "Transfer Switch #2" in your sketch. In the picture you last uploaded, I believe the harness circled in green needs to be connected to the open harness in your hand given the yellow and black wires indicated on EL-44. (The picture's too small for me to assert much, though.) EL-44 also confirms that 4E is for MT, but does not show an expected 6E harness label by the AT switch. 5E = Typo #2; says "4WD A/T Model", but EL-81 says harness 78M for "VG30E engine M/T model". Everything else has so far confirmed this should be an 8-wire harness on MT trucks. 6E = I suspect this is the correct harness for the AT Transfer Switch, but the diagram is wrong in indicating that it's two harnesses. 7E (AT) & 8E (MT) = These Vehicle Speed Sensors won't be mistaken as switches...they'll have a cylindrical body coming off them. Wires will be red and white Given the various EL diagrams, these appear to be the pins for 5E (note that the numbers from the terminal side, so they might be reversed depending on how you're looking at it): 1 - white/black (2E - Back up light switch) 2 - ? (3E - Neutral Position switch?) 3 - yellow (4E - Transfer/4WD Switch) 4 - red (8E - VSS ) 5 - ? (3E - Neutral Position switch?) 6 - red/black (2E - Back up light switch) 7 - black (4E - Transfer/4wd Switch) 8 - white (8E - VSS) Now, about that neutral switch...or "switches", since I suspect (expect?) both AT and MT models to possibly have both. For sure, there's a neutral position switch on the transmission, either a dedicated switch the MT, or part of the inhibitor switch on the AT. TF-9 shows a switch, and in a different position than MT-33, so I presume it to be a separate switch, but I'm just not seeing proof anywhere...I can't find any circuit diagram that includes it. Normally I'd expect these switches to be covered in the EL - Warning Lamps section because they'd be used to warn of an unsafe condition, such as leaving the t-case in neutral while the transmission was in park (AT) or neutral (AT or MT)...the vehicle can roll. This condition triggers the "ATP" lamp, and while I don't see any mention of it, there is one illustration that suggests it's there. To that extent, I can't find much that covers the MT transmission's NPS circuit, except in the SMJ/"foldout" diagram, though I at least expected to see it as a trigger for deactivating the cruise control, but nothing there. Anywho....more pictures would help, though since 75% of the 5E can be identified, hopefully that's some process of elimination.

The 95 FSM shows only one transfer switch...but two switch "designs" existed. See EL-44. The diagram there indicates that for VG30E models that MT trucks had two single-wire connections using yellow and black wires, and AT trucks had a single dual-wire harness with yellow and yellow/black wires. I'm not sure what transmission you have, but I'd be willing to the switches really only differ by their harness. The location, per TF-9, shows it to be on the passenger side of the rear case of the transfer case. An actual picture of that 2nd switch, with relative position on the t-case or transmission, from your sketch would help. Otherwise, if you have the MT, the other switch might be the Transfer/Neutral Position Switch (doesn't exist on AT). Your picture in post #7 is of a switch where the terminal cap/boot has broken off (i.e., the wires aren't supposed to be exposed or disconnected there), so I presume that to be both the switch you're looking for, and the source of the problem. I imagine that could be fixed pretty easily with some solder and some sealant. Otherwise, it appears to be a $28 part from Nissan, if even available. MT switch: AT switch: But depending on how far you want to go down the rabbit hole... The screenshot above, from NissanPartsDeal (.com) shows the applications, part numbers, and part number succession. Both NPD and Nissan (parts.nissanusa.com) also show 32005-ZD30A (MT) replaced 32005-SSG13, and 32005-33G1B (AT) replaced 32005-SSG14, both of which were for 1st Gen Frontiers and Xterras. The MT 32005-SSG13 switch has a direct replacement on RockAuto from Standard Motor Parts NS268 ($29), listed as 4WD Switch. The AT 32005-SSG14 switch has a direct replacement on RockAuto from Standard Motor Products LS287 ($17), but appears as a Back Up (Reverse) Lamp Switch on various Nissan MT trucks and cars, such as 94-95 Hardbody and 95-98 200SX (among others) Since AT switch seems to fit other models, it stands to reason parts in the same category should also fit, such as the Beck/Arnley 2011791 ($8) switch for a 200SX; notably, many of those similar parts only seem to differ by wire length. That all said, I'd be willing to bet you can grab just about any of those switches and they'd work fine, if not direct fits despite some possibility that some wires may be too short. Not that you couldn't splice things if needed. If the factory switch still works (you just need to do a simple continuity check when 4wd engaged and disengaged), then it seems like you could repair the switch, potentially without even removing it from the case.

Yeah, I've since seen that the front is an R200. I'm thinking to do a LSD in the front (from Tractionconcepts.com ), and a lunchbox setup in the rear. I have a partscar SE kicking around. I'd like to pull the entire rear disc brake axle off of it for a swap, and install the lunchbox into it before throwing it onto mine. I'm not sure if that currently has LSD in it or not, or what shape it's in.

Just heard from the Dealer. they found out one of the pins in the ecm were bent, after straightening it and plugging it back in started right up. finally some good news today. will be picking it up after work. thanks alot for all the help. will report back on how everything goes.