Relay upgrades and other parts

[sirrus]

Yay, I'm a vendor now Here I'm going to list all parts that I'm making for sale. I'm expecting to add more as I'm solving different issues during my slow 1988 Grand Wagoneer restoration, so stay tuned!

Relay upgrades and harnesses

Relay module (works for tailgate, windows or locks) - $60 (domestic US shipping included)

Adding relays to the system addresses multiple issues that factory wiring has by taking the electrical load of the switches and delivering full current to window motors or lock actuator. As a result you're getting more reliable operation, prolonging your switches life and getting faster window movement.

Here are videos of rear left door window operation BEFORE and AFTER installing relays.

Core of any module I'm making is waterproof relay/fuse holder that can house either two 35A micro ISO relay. I'm using high-quality 12 gauge GXL wire for all connections. Module itself is very compact and intended to be mounted inside tailgate or the door.



Installation is easy - you need to make 2 cuts in existing wiring, crimp 4-5 connectors, connect the module and mount it. All modules have same wire color coding and labels attached to wires as well. I designed it to keep modifications to original wiring minimal and to be able to easily revert back to factory operation if desired. Modules are using existing power feeds so there is no need for running additional wires.

Kit includes:

• relay module with 12 gauge GXL 12" wire leads
• two 35A micro ISO relays
• mount plate with adhesive tape
• quick disconnect connectors and t-taps

You'll need one module for tailgate, one for every door window and one for all 4 power locks - they can be installed in any combination.

I've come up with connections that are easy to use and work well - t-tap and ring terminals for power and ground, quick disconnects for motor/relay wires. Modules will come with those installed by default and kit includes extra ones that you'll need to crimp on original wiring.
If you prefer getting module without installed connectors - please mention it when ordering!

Wiring diagrams are available HERE

Installations instructions (with pictures and diagrams):

• tailgate
• power windows
• power locks

Headlight relay harness - $110 (domestic US shipping included)



Main features:

• waterproof relay box
• two 35A micro ISO relays
• separate 20A mini fuses for high and low beams
• ceramic sockets
• 12 gauge high quality GXL wire (16 gauge for trigger signals)
• durable nylon braided mesh protects wiring from chafing
• two mounting options - angled (with two sheet metal screws) or horizontal (plate with adhesive tape)
• no splicing needed for installation

This harness addresses two headlight wiring issues that FSJs have - thin wires (16 gauge) and lack of relays, which both results in rather dim lights. Stepping up wiring gauge and adding relays lets more power reach your headlights (brighter lights) and takes load off lights switch and dimmer. Daniel Stern has an excellent article about this on his web site if you want to get more into technical details.

Installation is easy and doesn't require soldering or splicing - harness plugs into stock headlight socket behind passenger side lamp, then you connect lamp with sockets on the harness and connect 12V and ground feed ring terminals. 12V power supply (red wire) should be connected to alternator output (stud on alternator) or to starter relay stud (1986+ only). Relay box installs on the passenger side fender with either screws or supplied mounting plate.

3D printed parts (shipping not included)

Tailgate glass bumpers - $5 for pair



Bumpers go inside the tailgate and prevent tailgate glass from slamming on metal horns when it is lowered. If yours are dry or gone and you're installing tailgate relays it would be a good time to replace those.

3D-printed from TPU (Thermoplastic Polyurethane), they are flexible and resistant to abrasion, grease and oil. Installation should take no more than a couple minutes once you have tailgate access door off.

Here's a picture of bumper installed:



Door handle/armrest repair insert - $5 for pair



Used to fix door handle that got broken from pulling too hard on it or over tightened screws. 1 pair does 1 handle. For more details on repair check this post

Tailgate wiring grommet - $5 for pair



Protects tailgate wiring from chafing. Grommets are specifically sized for that opening in the tailgate, are easy to install with RTV and cover metal edges.

Here is how it looks installed (not glued yet though)


If you have any questions or want to order - ask in this thread or shoot me a PM

[refinemrh]

how do I purchase the tailgate kit?

[sirrus]

how do I purchase the tailgate kit?

PM sent

[sirrus]

Received more parts today so I'll be building more boxes when my hand is functional again Have 6 ready to ship now

I'm starting to make headlight relay harnesses soon - same style waterproof housing as relay modules holding 2 35A relays and 2 20A mini fuses, 10/12 gauge GXL wires and plug-and-play installation (no cutting or splicing). Stay tuned!

[Abdelhassan]

Please pm on how to purchase relays

[sirrus]

Please pm on how to purchase relays

PM sent

[sirrus]

Headlight relay harnesses took longer than I thought due to ton of other things I had to do, but I'm getting close



Ceramic connectors, so it's safe to use with high wattage bulbs



Two relays and fuses in the waterproof box



Double checking if I got all wires long enough





Everything looks good, so last part left is to finish mounting plate and it's ready. You can also see my first version of harness installed in the last picture (mess of wires and orange plastic thingy) - new one looks so better and cleaner.

Oh, and mounting plates are yellow now

[killerinstinct]

Congrats! looks like your kits are coming along, I will PM you as soon as I'm ready to do my window relays

Cesar

[ZBRA]

So, let me make sure I understand this correctly regarding the door locks. I have a 1983 2-door Cherokee. If I install one relay box in the passenger side door, it will convert my door lock actuators to relay fed power in both doors?

[sirrus]

Congrats! looks like your kits are coming along, I will PM you as soon as I'm ready to do my window relays

Cesar

Thanks!

So, let me make sure I understand this correctly regarding the door locks. I have a 1983 2-door Cherokee. If I install one relay box in the passenger side door, it will convert my door lock actuators to relay fed power in both doors?

Yes, that's correct. Same for 4 doors - one relay box in passenger door for all 4 doors to be relay fed. Front passenger door is where all door lock actuators are tied together - even signal for drivers lock goes from drivers door to passenger one first and then back to driver door actuator.

[ZBRA]

Cool. I need three of them. How do I order?

[sirrus]

Cool. I need three of them. How do I order?

PM sent

[78Chief]

Very cool! Flagging this post and will order rear tailgate kit and headlight kit as well once I get through some motor side projects. Ive learned not to buy in advance, fills up the garage with too many projects and gets distracting.

[sirrus]

Very cool! Flagging this post and will order rear tailgate kit and headlight kit as well once I get through some motor side projects. Ive learned not to buy in advance, fills up the garage with too many projects and gets distracting.

Thanks! Lots of parts laying around waiting to be installed can be distracting and messy, but can also be motivating to put them on for me at least. And I’m always tempted to buy half of the store when I need just couple of things!

I’ll be adding more 3D printed small parts (both rubber and plastic) soon. And if anyone needs something printed (or modeled and printed) - let me know, I’m always ready to help!


Sent from my iPhone using Tapatalk

[78Chief]

One more question on the kit for the headlights. Would this kit help with any LED headlight kits? Older wiring is known to have issues supporting an LED headlight. I would think these upgrades would address all of that, but want to verify to be 100%. Have you had a customer test? If not, I might be your first in a few months.

[sirrus]

I didn't have a chance to test it with LED lights yet, so can't be 100% sure. What kinds of issues do people run into with LEDs? If it's flickering lights when they are off, that can be addressed by using SPDT relays instead of SPST and a slight change in the harness, so it would be grounding positive terminal of the bulb when it's off instead of just breaking connection to 12V.

When I did my rig, I went with H4 conversion lights from Hella and couldn't be happier about it. Lots of light and much better pattern once aimed properly.

[Atlasts]

I would like to order a headlight harness for my 1977 Jeep J10. Please let me know how to order.


Thanks,

[sirrus]

I would like to order a headlight harness for my 1977 Jeep J10. Please let me know how to order.


Thanks,

PM sent

[sirrus]

From now on I'm going to be including new type of t-taps for relay modules. I've also considered Posi-taps, but these are more durable



Old style taps sometimes required wrapping with tape or something else to keep them from disconnecting. Shouldn't be an issue with these

[ShagWagon]

Okay. I’ll take A headlight, power windows and locks setup. I have a Serhills tailgate one already. Also two rear door repair blocks. Maybe you’ll give me a package discount and come to Coos Bay and install it all.