G56 Clutch Interlock/Safety Switch Override

Today I spent a little time on Marge the Barge, the old trusty 2010 Dodge 3500. On most days I love having the manual transmission. Mated to a tuned 6.7L Cummins turbodiesel by a Valair organic dual disk, the G56 6-speed manual is a ton (pun intended) of fun to drive. There are times when having a manual transmission isn't the best. Think sitting in traffic. Or recovering from a fractured left femur.

I haven't driven or even started Marge since January due to my injured leg. To start her without sitting in the drivers seat requires depressing the clutch with my left hand while hitting the ignition with my right. Even with the slave cylinder the clutch takes a bit of effort to depress. All this adds up to an awkward experience. Today we're going to fix that.

The interlock switch located on the clutch pedal is a very simple, two wire setup. With the clutch engaged (pedal up) the circuit is open and the truck will not start. This keeps someone from accidentally starting the truck while in gear. Once the torquey Cummins gets going it isn't stopping for much. Makes sense to have the safety switch in place. Conversely, when you depress the pedal far enough to allow the contacts to touch and the circuit is closed and the truck can now be safely started.

Today I'm installing a momentary switch that will allow the truck to start without depressing the pedal. There are many reasons why you may want to start the truck this way, for me the greatest advantage is being able to knock it into neutral, push the button and start the truck. By using a momentary switch the truck still won't start accidentally. As an added deterrent I'm going to position the switch where it won't be accidentally depressed. A person would need to make a conscience effort   to bypass the clutch interlock.

Here's the mod:

Step 1: Remove the two (2) screws holding the lower dash cover in place. Gently, but firmly pull from the bottom to disengage the retaining clips and completely remove the cover.

Step 2: Remove the interlock switch from the clutch rod by pinching the clips on the white panel and sliding backwards. Push the switch up and off of the rod. Unclip the pigtail by sliding the red tab back then depressing the retaining clip.

Step 3: Tap new leads into the two existing wires on the switch. For this I used ~2 feet of 18 AWG wire for each. The new leads were soldered onto the factory wires. I purposely left the wires long as they will be cut to the appropriate size after routing.

Step 3: Reinstall the switch on the clutch rod.

Step 4: Install the switch in the dash panel.

I picked up a simple momentary switch from the local autoparts store. Simple, push button that is normal open design.

To mount this specific switch I had to drill a 3/4" hole in the lower dash cover. After making the initial hole I found that that particular area of the cover was actually 2 layers thick. Turns out that it is just as thick as the switch is long. This is a problem since I can't run the nut onto the threads to hold the switch in place. Two options here: 1) drill out a second, larger hole in the rear to countersink the nut or 2) use some epoxy to permanently mount the switch. I'm keeping this truck forever and now there is a big hole in the dash cover so I'm OK with the permanent mount solution. Decision made I fit the switch, mixed the epoxy, and filled the space around the switch. I let this sit about an hour then cut the wires to size. Strip the ends, fit into the switch, and clamp down the screws.

Step 5: Replace the lower dash panel and enjoy!

Headliner Replacement

Today's project is the replacement of the old, falling down headliner. Overtime the factory foam backing deteriorates allowing the fabric headliner to separate. Looks terrible and can block your view.

This is what I'm starting with:

Having no headliner is an option that comes at the cost of increased noise, decreased temperature control, and possible condensation issues. Since I'll be daily-driving this beast for awhile I prefer to have the comforts associated with a functional headliner.

Time to get to work.

Step 1: Remove the headliner.

Pretty straight forward here. I chose to remove the speakers, overhead lights, and sun visors first. Next, starting from the rear of the vehicle, remove the plastic trim working your way forward. No hidden screws however the metal clips holding the trim to the A-pillar are much stronger than the tiny plastic nubs holding them to the trim. As such every one broke away from the trim regardless of how I attempted to remove them. I'll run some metal screws to hold the trim in place later if necessary.

With everything removed the headliner will slip out of the back gate. Have to be careful here as the headliner consists of a very thin fiberglass support structure to which the material is glued. I didn't have any issues removing and transferring to a couple of sawhorses.

Step 2: Prep the headliner support.

I started by peeling as much material from the fiberglass support as possible. The factory material didn't have much holding it in place. The next step is to remove all residual foam/adhesive from the support. This is important to ensure the new adhesive has a solid, clean surface to adhere to. I used a stiff bristled brush and vacuum. A little patience and elbow grease got the job done.

Step 3: Glue on new fabric.

With all the old fabric and adhesive removed its time to add new material. For this job I ordered four (4) yards of grey headliner material (Amazon Link) which is a yard more than necessary but I want to do the sun visors to match. A little extra never hurt either. I also ordered two (2), 18 oz cans of
3M 38808 Headliner and Fabric Adhesive. I began by positioning the material over the support. It doesn't have to be perfect as everything is covered by the plastic trim. I left a little extra length on the front to fold over. There is no trim along the windshield so having the material flow around the support makes for a cleaner look IMHO. After laying the fabric out, the first half was folded back and  adhesive applied to both the support and foam backing of the fabric. This was allowed to sit a few minutes to get tacky. I then slowly rolled the first half into place gently smoothing from the middle to the edges as I went. You really only get one shot at laying this stuff down - any repositioning results in the foam tearing away. Repeat for the second half.

Step 4: Re-install headliner.

Reverse Step 1 from above. The A-pillar trim seems to sit back into place pretty well without the metal clips. We'll see how long that lasts. Everything else is pretty easy.

Step 5: Cover sun visors.

I used Matt's video as an instruction and he extra materials to match the headliner. The whole thing went much quicker than I thought it would. 

Step 6: Install LED's in the overhead lights (optional).

While I had the overhead lights out I wanted to see if I could make some random LEDs I had laying around fit. It isn't pretty but all soldered up solid. They work and look great. Now just need to do the other dozen or so lights throughout the interior...

Pretty happy with the finished product.

Project Cost: $78

Total Build Cost: $3,896

Minor Set Back

Luck finally caught up with me today. After 17 years riding I finally encountered a situation in which I couldn't avoid collision. While commuting home from work I was t-boned by a Ford Expedition resulting in a little hospital time and a totaled bike. It'll be awhile before I'm able to use the left leg again which means the Jeep (an automatic) will now take the roll of daily driver. I'll reprioritize projects to get it into commuting shape. Just need to get a little recovery under my belt to do the work. Happy to be alive :)

Making Friends...

Rain in the forecast again providing good excuse to leave the bike at home and take the Jeep for a stroll onto post. Idaho requires a VIN inspection for title transfer and the MP station on post provides just such a service. New battery provided lots of amps to fire the engine at a touch of the key, old xmas tree strapped to the rack for delivery to the local recycling center, and bluetooth speaker on the dash providing some Tom Petty for the commute.

All was well until I see the motorcycle cop coming on in the opposite lane paying too much attention to the black beast. Usually when I see this guy I'm on the GS and we exchange a biker wave - guess he didn't recognize me in a cage. Or he did and wanted to say 'hi'? Either way the blue lights came on and I quickly navigated to the nearest parking lot to have a chat. Turns out the TX registration sticker is expired (I knew this) and because it is so prominently displayed provides an easy target for the boys in blue.

Now I know the guy is just doing his job so I'm not complaining. And when life hands you lemons... I explain my situation and how I'm just trying to get a VIN inspection in order to facilitate the Idaho registration process. He gets it an says I'm just getting a warning. Cool. And BTW, since we're on speaking terms here, would he be so kind as to sign this little document (ID VIN inspection form) since he already ran my VIN through dispatch to make sure the rig wasn't hot or something. He waffles a bit so I sweeten the pot by suggesting that if he signs it I can turn right around an park my illegal rig back at the house until the new registration is received. I'm not trying to be a PITA, just looking for an assist :)

Fancy little handheld device he had printed out a warning that I'll cherish for years to come I'm sure.

So yeah I got pulled over for the first time in a very long time. But it worked out in the end as I ended up with a VIN inspection 15 miles closer to the house than if I'd have had to go all the way to the MP station.

Now what personalized plates for the XJ? MTNCRLR? SLWCRLR? BIOMAN2? MTNGOAT is already taken :(

Test Drive and Photo Op

After bolting up the new shoes into the freshly shorn wheel wells I decided to take the XJ out for some gas. Also wanted to see how she performed on the highway with the new additions.

Over all very pleased. Wheels/tires feel well balanced. Intake is hardly noticeable under normal acceleration. Yeah she's slow but I'm not building a race car. Engine/trans/gears appear to function fine with the current configuration. For any long highway trips we'll just throw the XJ on a trailer and motor along in style with Marge the Barge doing what she does best. Tow.

Front end needs work and that will be next on my to-do list. There is a bit of play in the steering and general loose feeling from the front. Bad ball joints, TRE's, etc all add up. Going to throw on a junkyard Grand Cherokee tie-rod and adjustable track bar when I do the ball joints and u-joints. Should help to tighten things up.

The good news is no rubbing so far. Yes the front sway bar is still attached limiting travel. Not much flexing here but small steps... Here are some glamor shots:

Wheel Well Trimming Part 3

Lazy morning. Decided to make a Home Depot run for a few goodies (new cut off wheel included) and stop by Sears for a battery. Found a giant wood beam @ 70% off. Combined with military discount I think it cost me around $5. Pierce (Wife's old CRV) is a parts running champion.

For a battery I picked up a DieHard Group 34 AGM. No more dead battery delays :)

Finally back to work. Made short work of the rears. There is no liner to mess with and I haven't decided on rear flares yet. Will run flareless until I make a decision.

First, mark the pinch welds:

Next I made pie cuts back to where the two pieces of sheet metal meet. I didn't want to cut further and expose the gap between the sheets. This happens to be right at the body line so no marking necessary. After the cuts are made then its just a matter of banging away with the dead blow hammer. Added bonus - the dent in the rear quarter panel (see pic above) popped out with the first couple of blows. Finished with a flap disc and paint.

End product with new wheel/tire installed:

Project Cost: $163

Total Build Cost: $3,818

Wheel Well Trimming Part 2

Dead battery. Again. I really need to put a new battery in as this one was known to be bad. My battery charger has been working overtime this month. Even with a full charge the battery is good for maybe 2 starts and won't last more than 1 day between charges. But for now it's in the garage so I can start cutting.

Safety first! Hearing and eye protection in use throughout the rest of this post. Some who read this may recall a time many years ago when I failed to use eye pro when grinding on the frame of the Goat. Ended up with steel slivers embedded into my cornea. Optometrists are still asking me about the residual scarring. Never again.

For this project my intention is to cut as much fender away as possible. For the front I will retain the inner plastic liner. This is key to keeping the elements away from the door hinges which would otherwise be exposed. Some folks just stuff a pool noodle in there. Let's see if I can make the liner work first.

Here's a few pics showing why trimming is necessary. Plenty of room at the LCA thanks to the 4.5" backspacing with the rims. This is on the drivers side.

First I started by masking off the area I'll be working with. Since I'll be retaining the liner I've also removed that before starting.

I like the TJ fender flares the PO provided with the rig. Figure I'll cut back as far as the inner lip of the TJ flare. To do that I've clamped the flare into place and marked off its outer edge.

First cut is to remove some excess sheet metal around the fender. A 4" cut off disk on the old angle grinder made short work of the thin sheet metal. I just followed the factory body line to remove about 1" around the opening. Also went ahead and made my pie cuts in the lip that stick down into the middle of the well. Caution! there are pinch welds in this lip - make sure you identify them and don't cut through them. I used a dead blow hammer to knock these pie cuts flat. Also note that I've cut the shock boots off. I belong to the club that thinks shock boots are bad, mmmkay?

Next I made ~2" pie cuts on the outer fender up to the inner flare mounting line circumscribed earlier.  Here is where things became time consuming. Making small adjustments I cut the fender liner to fit the new space as best as possible. The pie cuts will be folded over the liner to provide an outward mounting point. Standard body trim push-type plastic retainers were used elsewhere to hold the liner flat against the wheel well. Again using the dead blow hammer I knocked the pie cuts flat. Everything gets hit with a 60 grit flap disc followed by a coat of rattle can black. 

Taking way too much time at this point I skipped pics. Suffice to say I fit the TJ flare to the body lines of the XJ using a long, slow process of sand/trim, test fit, repeat. I used the existing mounting holes in the flare and attached using push-type plastic retainers. Feels stout.

Update with photos.

Liner result:

Cab-side front passenger wheel well. You can see the result of the cut and fold:

Bumer-side front wheel well passenger:

I plan to fill in the marker light recess to create a smooth flare. Then everything will be hit with some bed liner to include the rocker panels and flares to give it a more consistent look and added protection.

Repeat for the drivers side. Long day...

Tomorrow I'll tackle the rears.

Project Cost: $0

Total Build Cost: $3,655