Alright, I keep fucking this up. No, the little rubber lip that sticks down through the frame mount isolates it. Dammit to hell and back.Does that metal extend to touch the frame? I don’t think it does personally.
Alright, I keep fucking this up. No, the little rubber lip that sticks down through the frame mount isolates it. Dammit to hell and back.Does that metal extend to touch the frame? I don’t think it does personally.
Because "dots" on body mount bushings are apparently a piss poor electrical solution.Makes me wonder why I didn't originally have a good ground between the two.
It was certainly cheap and easy.Because "dots" on body mount bushings are apparently a piss poor electrical solution.
And wire costs money, obviously the factory install works "good enough " for most cases.
But I agree with the wired bonding approach if you need it.
Its harder to completely isolate something like this than to purposely connect it! Looking like Jeep really did neither, which isn't optimal.Somehow the frame has a path to ground. It checks out with a multimeter and low amperage loads. However, it does not work for anything passing real current, Like Zorba's winch. This makes perfect sense because there is not a direct connection from the battery negative to the frame. However, there is a connection and we can’t figure it out…
Or blow up an innocent 20 ga wire somewhere!No there is not.
Aside from the things that you really don't want to use as an electrical ground like the brake lines Lou mentioned.
My opinion is the frame is not grounded in any electrical sense other than the brake likes like you suggested. I think the guy in this thread had a bad battery ground cable and installed a winch grounded to the frame essentially using his brake lines as ground cables. I suspected the steering gear too but I think all the bushings are isolated.My other thought is brake lines.
Well, I have the dash out of my 97 and I seem to recall a plastic isolator but I will check that. The shaft through the firewall is isolated as is the carrier bearing and lower steering shaft.@mrblaine This is definitely far right field but the steering column in connected to the tub. I have never taken a TJ column apart but i assume it uses larger ball bearings,. The upper and lower steering shafts connect the steering column to the gearbox which is bolted to the frame. There is definitely a potential for a ground path here.
My other thought is brake lines.
I can't find a way to disagree which is why I started this.In my opinion Chrysler did not intend to have the frame grounded. If they did there would be a ground wire from the engine block or the firewall to the frame.
Other than the early filler neck which is in a plastic bezel and its ground strap to the frame, not that I can readily come up with.Are there any electrical components on a stock TJ grounded to the frame? My guess is no.
I'm guessing that if you pulled the front brake lines loose at the frame, most of that would go away.My custom LJ has zero conductivity between the axles, frame and the body (even accidentally tried welding). But the (relatively stock) TJ does when testing via multimeter.
it doesn’t.Other than dissipating static electricity, why would a stock tj need a grounded frame?
it doesn’t.
Unless it’s to reduce corrosion, electrolysis is murder on steelit doesn’t.
My 98 I have only ever found the two you have mentioned. Ideally with no electrical items on the frame something for static is probably all that is needed.And I'm not referring to the early model ground strap that clips on the frame for killing static spark at the filler neck.
Or the little small gauge ground from the motor to the frame at the right side motor mount.
I'm talking about a real ground like you would use for actual electrical stuff of decent amp draw.