anyone have 99 xj 4.0 wiring diagrams?

[bldeagle10]

99 xj, 4.0 aw4 np231. i want to a partial wire tuck/ waterproofing of the engine bay which includes relocating the ECU and fuse box and all that good stuff, but i cant afford to have the xj out of action for a few days so i need the diagrams so i can throw together a custom harness with the lengthened wires. thanks for any help.

oh and this is in the stree/performance cause of the wire tuck aspect of the project.

 

[Talyn]

Best bet is to find yourself as FSM and go from there. The fuse box and PCM sit fairly high already and are fairly water proof. If you are doing it for waterproofing I doubt you will gain much. If you relocate it to the interior you would actually have to locate them lower than stock (unless you mount them on top of the dash). Also, the interior will only give you temporary protection from water as it will fill up if you stay in the water long enough.

 

[MT Mike]

http://www.naxja.org/forum/showthread.php?t=59882

That post pertains to the ENTIRE site. Purchasing a legal copy of the FSM is the only right way to get the info you want.

 

[O-Gauge Steamer]

For the PCM, you could snag an ECM Extender from AEM. Then it is a simple one for one wire extension. Pre meaure the wire length needed to move the box and then just cut it in. There is shrink tubing big enough to go over the connectors and a healthy gob of dielectric grease would, I think, take care of that. The PDC is another story. Only way I can see is to, again, do a one for one extension and move it into the cab somewhere high.

 

[tragiccomic1972]

deleted by moderator...

 

[bldeagle10]

thank you guys for the info, i will take a look at the extender's from AEM. i know they are pretty waterproof as it is, but i tend to go overboard with protection. my plan, no matter how ugly it will look with a wire harness leading up there, is to eventually mount the battery as well as a deep cycle battery, ecu, fuse boxes and all the important electrical stuff up into a box on a cargo rack, which is going against my LCOG plans but eh, havent seen anyone do it before and i want to try it and see how i like it.

 

[dave92cherokee]

The only thing that needs to be done on the ECM is putting some dielectric grease inside the connectors as the ECM itself is entirely potted (encased in hardened latex) to prevent any liquid damage. The fuse PDC is also fairly easy as you can unmount it and gain access to both sides and just pump a bunch of dielectric grease around every wire and contact on both sides which will protect it fairly well. You will run into water causing problems in MANY areas before it affects either of them.

 

[bldeagle10]

i want to run a snorkel, but i have a search light on the drivers side as seen here

not the best picture but its the first one i found on photobucket...
anyways. i dont want to get rid of the search light, that would require welding a patch, new interior pillar panel deal, paint...to much work and money, so id have to run a snorkel on the other side, in which case the fuse block is in the way anyways. i know id run into issues with breathers and such before i run into an issue with the ecu or fuse block, but when i do end up taking care of this i want to get it all in one go. i dont want to leave anything to chance and have it end up messing up a fun outing. i dont plan on being in crazy deep over the hood water, but if it happens...it happens. im going to school for Forestry and plan on being a park ranger, i plan on working search and rescue, if i have to, i need to know i can cross a river with confidence.