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Ground Strap Replacement (Step by Step)

31K views 81 replies 20 participants last post by  Gary Kline  
#1 · (Edited)
It’s that time of year again. The weather is starting to get cold and if you live in the North where the roads are salted in the winter, it’s time to winterize your Cherokee so the unexpected doesn’t happen in the middle of February.

It’s well known the Cherokee has quite a few ground straps but the most critical one is the strap leading down from the negative terminal on the battery to the frame and continuing on to the transmission casing. It's also in the unenviable position of being exposed to moisture sources and once corroded, can lead to all sorts of electrical anomalies, warnings or issues. If you are experiencing error lights or messages regarding unrelated systems like the transmission, ABS, shifter etc. , often times it's an intermittent ground.

My 2014 TH's ground strap was at its end of life so before winter set it, I decided to change it. Replacement is an easy DIY job. My total cost was $18 and took about 20 minutes and can be done with wheels on the ground. While replacing it is pretty straight-forward, here’s the process step-by-step.

-------------------------------------------------------------------------

1. Ground straps are just braided metal so I ordered a generic off Amazon. The only important thing is that it’s at least the same length and thickness as the original. I chose the one below which was the perfect length and about 25% thicker than the original.
Image


2. Here it is compared to my hand. This strap’s a beast, much thicker than the original strap. There’ll be no intermittent contact when this is in place.
Image


3. Next step is to turn your wheels to full left. Everything can be done with wheels on the ground from the driver's side wheel well.
Image



4. We’re going to peel back the front half of the wheel well liner. To do this remove the two plastic fasteners and the 10mm bolt on the inside face of the liner.
Image

5. Then remove the three 8mm bolts on the front left edge of the liner. On the bottom (yellow arrow) there’s a metal pop rivet. On many cars this has already been pulled out from previous liner removals. If you still have it I’d recommend drilling it out or cutting a little of the fender liner plastic away from it etc. and removing it. You can use a plastic fastener (or even nothing) when reassembling. The liner does not need it to stay in place.

Image




6. Peel the liner out of the way enough so you have a clear view. You’ll now have clear access to the ground strap. Note it’s one long strap from the battery to the transmission with a solid connector frame lug in the middle. The upper half (green box) between the frame connector lug and the battery is covered with wire wrap and electrical tape and normally doesn’t corrode. The lower half (red box) is a different story. It’s exposed to road splash as well as any spillage from filling the windshield washer bottle and almost always be in some state of corrosion. This is the part we’ll replace.

Image



7. Take off the nut at both the frame connector lug and the transmission and put the new ground cable right on top and the nuts back on. Once the new cable is in place, simply cut through the braided part of the old, corroded cable at the frame connector lug.

Image


Image


Image





8. As shown in this photo with the old grounding strap held up against the newly installed strap, the new cable is more durable and provides approximately a 25% larger grounding path. Finish up by putting the fender liner back on in reverse order. The new strap will probably last for the remaining life of the Jeep. Give yourself a pat on the back for a job well done (y)

Image
 
#2 ·
Ya, it's looking pretty green Brother. There it is Boys and Girls, step by step directions, with pictures and everything!!! Well done @Gary Kline !!!👍😉😎
 
#4 ·
So glad I live in the southern states and no salt.
 
owns 2022 Jeep Cherokee Trailhawk
#12 ·
#16 · (Edited)
when I was grounding a CB radio antenna to body (on a Forester hatch) I didn't used a braided grounding strap. it had just OK performance & higher than ideal SWR, & that was just a radio

if I were replacing this strap I'd go OEM or like Gary a tad beefier, wouldn't hurt

don't ask me about the fiasco when I was getting ready to sell it, removed the ground wire, then twisted the head off that bolt (short story: after two left hand bits, a straight, fluted extraction tool, & a proper tap wrench. got 'er done)

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Image

sorry for the tangent ... but this is why I use a mag mount antenna now. perfect 1.0 SWR & great performance
 
#19 ·
We will drive ours the first winter just with the undercoat to enjoy the new car clean but every summer after I will take it in to get Krown coated to keep the rust off it like all our other cars.

Hopefully that will prevent our ground strap from corroding anytime soon.
 
#20 ·
It’s that time of year again. The weather is starting to get cold and if you live in the North where the roads are salted in the winter, it’s time to winterize your Cherokee so the unexpected doesn’t happen in the middle of February.

It’s well known the Cherokee has quite a few ground straps but one of the more critical ones is the strap leading down from the negative terminal on the battery to the frame and continuing on to the transmission casing. It's also in the unenviable position of being exposed to moisture sources and once corroded, can lead to all sorts of electrical anomalies.

My 2014 TH's ground strap was at its end of life so before winter set it, I decided to change it. Replacement is an easy DIY job. My total cost was $18 and took about 20 minutes and can be done with wheels on the ground. While replacing it is pretty straight-forward, here’s the process step-by-step.

-------------------------------------------------------------------------

1. Ground straps are just braided metal so I ordered a generic off Amazon. The only important thing is that it’s at least the same length and thickness as the original. I chose the one below which was the perfect length and about 25% thicker than the original.


2. Here it is compared to my hand. This strap’s a beast, much thicker than the original strap. There’ll be no intermittent contact when this bad boy's in place.


3. Next step is to turn your wheels to full left. Everything can be done with wheels on the ground from the driver's side wheel well.



4. We’re going to peel back the front half of the wheel well liner. To do this remove the two plastic fasteners and the 10mm bolt on the inside face of the liner.

5. Then remove the three 8mm bolts on the front left edge of the liner. On the bottom (yellow arrow) there’s a metal pop rivet. On many cars this has already been pulled out from previous liner removals. If you still have it I’d recommend drilling it out or cutting a little of the fender liner plastic away from it etc. and removing it. You can use a plastic fastener (or even nothing) when reassembling. The liner does not need it to stay in place.





6. Peel the liner out of the way. You’ll now have clear access to the ground strap. Note it’s one long strap from the battery to the transmission with a solid connector frame lug in the middle. The upper half (green box) between the frame connector lug and the battery is covered with wire wrap and electrical tape and normally doesn’t corrode. The lower half (red box) is a different story. It’s exposed to road splash as well as any spillage from filling the windshield washer bottle and almost always be in some state of corrosion. This is the part we’ll replace.




7. Take off the nut at both the frame connector lug and the transmission and run the new ground cable. Once the new cable is in place, simply cut through the braided part of the old, corroded cable at the frame connector lug.

View attachment 227419

View attachment 227420

View attachment 227421




8. As shown in this photo with the old grounding strap held up against the newly installed strap, the new cable is more durable and provides approximately a 25% larger grounding path. Finish up by putting the fender liner back on in reverse order. The new strap will probably last for the remaining life of the Jeep. Give yourself a pat on the back for a job well done (y)

View attachment 227422
Top shelf step-by-step, pics especially helpful. Thanks
 
#21 ·
Is there a reason one would need to use something like what Gary used? A “ground strap” as opposed to like high temp heat shrink protected, 0/1 gauge oxygen free copper cable (not copper cladded aluminum) using tin plated copper lug nuts 1/4” and 5/16” hole sizes for the designated ground positions.

If this would be ok to use, would it be sufficient to replace the factory cabling or would it be more ideal to “stack” it alongside the factory grounding cables?

If it doesn’t fit due to 0/1 gauge wire is too thick, would using 4 gauge wire and stacking it alongside the factory ground cables be more ideal than 0/1 gauge (by itself, not using the factory ground cabling)?
 
#22 · (Edited)
Hey @yodog ,

I'm sure all of that would work but it's probably more work than needed. For example, the ground strap in my posting took two seconds to find on amazon for $17. I've never tried to find oxygen-free copper cable (non copper cladded aluminum) with tin plated copper lugs but it sounds pretty specific. Also, you don't really need high temp heat shrink protection since the ground isn't near the engine or other heat source. In the end, anything metal will probably work. One could probably take an old kitchen knife, drill a couple holes in the ends and it would work! LoL! (y)
 
#27 ·
For the one in the photo (connecting to the transmission casing), just this one.

It total there are about 20 grounding points scattered throughout the engine and body compartments. Some, such as the one from the battery/IBS (if equipped) to the frame and transmission as well as the one from the starter relays and PCM are critical ones. Others, impact various other systems, both engine/powertrain as well as convenience/options.

Image
Image
 
#31 ·
Just did mine this morning. I probably should have pulled the ground off the battery first. Jeep was real confused after, with the radio not turning on, 4wd unavailable error, and the odometer blinking. Pull the battery ground off for a minute, reattached and all was well again. I pulled the wheel off and only undid a few of the fender liner plastic rivets so I could pull it back enough to get access.

You can see the old strap if you look up from underneath. Mine was getting pretty green, but not horrible.
 
#39 ·
I wonder if this is the problem with my '15 Trailhawk 3.2. Couple days ago, engine light, as well as all the other lights for the fancy tech stuff came on. Getting two generic camshaft codes and trans control module codes thrown at the same time. Assuming electrical, started with new battery (it was time for a new one) and checked alternator. Still have the same problem. Took to local repair shop and they are also stumped (these guys have bailed me out so many times so surprised they are stumped). They are going to take another day to look into it. Maybe I'll mention this to them. i live in Midwest and have 109k miles so I'm sure my ground belt is in rough shape.
 
#47 ·
It’s that time of year again. The weather is starting to get cold and if you live in the North where the roads are salted in the winter, it’s time to winterize your Cherokee so the unexpected doesn’t happen in the middle of February.

It’s well known the Cherokee has quite a few ground straps but one of the more critical ones is the strap leading down from the negative terminal on the battery to the frame and continuing on to the transmission casing. It's also in the unenviable position of being exposed to moisture sources and once corroded, can lead to all sorts of electrical anomalies.

My 2014 TH's ground strap was at its end of life so before winter set it, I decided to change it. Replacement is an easy DIY job. My total cost was $18 and took about 20 minutes and can be done with wheels on the ground. While replacing it is pretty straight-forward, here’s the process step-by-step.

-------------------------------------------------------------------------

1. Ground straps are just braided metal so I ordered a generic off Amazon. The only important thing is that it’s at least the same length and thickness as the original. I chose the one below which was the perfect length and about 25% thicker than the original.


2. Here it is compared to my hand. This strap’s a beast, much thicker than the original strap. There’ll be no intermittent contact when this guy's in place.


3. Next step is to turn your wheels to full left. Everything can be done with wheels on the ground from the driver's side wheel well.



4. We’re going to peel back the front half of the wheel well liner. To do this remove the two plastic fasteners and the 10mm bolt on the inside face of the liner.

5. Then remove the three 8mm bolts on the front left edge of the liner. On the bottom (yellow arrow) there’s a metal pop rivet. On many cars this has already been pulled out from previous liner removals. If you still have it I’d recommend drilling it out or cutting a little of the fender liner plastic away from it etc. and removing it. You can use a plastic fastener (or even nothing) when reassembling. The liner does not need it to stay in place.





6. Peel the liner out of the way. You’ll now have clear access to the ground strap. Note it’s one long strap from the battery to the transmission with a solid connector frame lug in the middle. The upper half (green box) between the frame connector lug and the battery is covered with wire wrap and electrical tape and normally doesn’t corrode. The lower half (red box) is a different story. It’s exposed to road splash as well as any spillage from filling the windshield washer bottle and almost always be in some state of corrosion. This is the part we’ll replace.




7. Take off the nut at both the frame connector lug and the transmission and run the new ground cable. Once the new cable is in place, simply cut through the braided part of the old, corroded cable at the frame connector lug.

View attachment 227419

View attachment 227420

View attachment 227421




8. As shown in this photo with the old grounding strap held up against the newly installed strap, the new cable is more durable and provides approximately a 25% larger grounding path. Finish up by putting the fender liner back on in reverse order. The new strap will probably last for the remaining life of the Jeep. Give yourself a pat on the back for a job well done (y)

View attachment 227422
If I'm removing the old strap, what am I cutting?