Slim Rack Slide Out Tester

I had a customer who stored his Motorhome in his garage. The slide out failed open and he couldn’t get the Motorhome out. He was trying for weeks and couldn’t find anyone that could get the slide out in. I took my other test box out there and was able to to get the slide out in. I knew for sure there was a damaged wire. I used a jumper to operate that motor and the other worked through the factory wiring. I knew I could come up with something that could make it easier and faster to move and diagnose a slim rack slide out. I made a video on how I made it and put up some wiring diagrams. I went through it pretty fast so if there is anything you want more details on let me know in the comments. I’ll also post chapters and affiliate links.

Here is the link for my previous slim rack video.


0:00 intro
1:04 overview
1:22 soldering charge port
1:59 mounting charge port
2:15 wiring with wago
4:00 wiring motor switch
6:02 signal circuit power
7:36 signal circuit
9:18 pigtail wiring
9:40 fixing plug pin
10:00 making banana plugs for meter
11:20 installing banana plug sleeve
11:41 bench testing box
12:02 installing handle
12:22 long markers
13:05 shortening machine screws
14:22 disconnects and motor wiring explained
14:53 override demo
15:04 testing demo
15:50 pigtails explained
16:35 negative wiring diagram explained
18:42 positive wiring diagram explained
20:16 signal circuit wiring diagram explained
22:32 negative wiring diagram
23:34 positive wiring diagram
24:36 signal circuit diagram

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Awclub 10"x6"x4"(250mm x 150mm x 100mm) Dustproof IP67 Junction Box DIY Case Enclosure Gray

Banana plugs

10Pcs 4mm Banana Plugs Solder DIY Banana Plug Male Connectors Adapters for Multimeter Test Leads Probes

CESS Black and Red Banana Female Jack Socket - 4mm Banana Female Connector Panel/Chassis Mount Soldering Type (10 Pack)


AutoEC 3pc 12V 20A Car Truck Round Rocker Toggle LED Switch Blue Light SPST On-off Control

30 Amp DPDT Momentary On-Off-Momentary On Rocker Switch

The ones I used aren’t available these should work

TWTADE / 5Pcs Black ON/Off/ON DPDT 6 Pin 3 Position Boat Rocker Switch Car Auto Boat Rocker Toggle Switch Snap AC 250V 125V/20A KCD2-203

Molex box plug

6 Pin Molex Connector Lot, 3 Matched Sets, w/18-22 AWG .093" Pins, Panel Mount


ExpertPower 12V 10Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2500-7000 Life Cycles & 10-Year lifetime | Built-in BMS

Charge port

Philmore Panel Mount DC Power Jack (2.1mm Center Pin) : 2112

2.1mm DC Power Plug : 210


Wago 221-613 Lever-Nuts 10AWG 3 Conductor Compact Wire Connectors 10 PK Bag

221-415 | WAGO Lever-Nuts® Splicing Connector | for Solid and Stranded Conductors | 5-Conductor with Operating levers | 24-12 AWG | Transparent housing | [Box of 25 Pieces]


10 Pack 30/40 AMP Waterproof 5-Pin 12V Relay Switch (SPDT)for 12 Volt Automotive Marine Relays for Boats Auto Fan Cars

Handle, similar to what I used. Mine from Home Depot

The Hillman Group Hardware Essentials 851908 Black Screen Door Pull (4-3/4")

Wire for making extensions

Striveday 18 AWG 6 conductor wire Power Cable Audio Cable Signal Line (Red & Black & yellow & white & green & orange) 33ft UL certification


Fluke meter

Fluke 115 Digital Multimeter, Measures AC/DC Voltage To 600 V and AC/DC Current to 10 A, Measures Resistance, Continuity, Frequency, and Capacitance, Includes Holster and Silicone Test Lead Set

Soldering Iron

HANMATEK Durable Soldering Station,392℉-896℉ Smart Temperature Control 6 Seconds Rapid Heating Safety Certified Soldering Iron Station Soldering kit with Solder Bracket,Heat- Resistant Sponge SD1
Channellock 909 9.5-Inch Wire Crimping Tool | Electrician's Terminal Crimp Pliers with Cutter are Designed for Insulated and Non-Insulated Connections | Forged from High Carbon Steel | Laser Heat-Treated Edges Last Longer | Made in the USA
Wire strippers not In video but what I use at work
CHANNELLOCK 957 7" Ergonomic Handle Wire Stripping Tool
Ratchet crimpers. Not the ones I have but what came up In the search, look to be the same
IWISS SN-28B Dupont Crimping Tool for 3.96mm, 2.54mm, 2.5mm Pitch Dupont, JST XH VH Connectors, AWG 18 to 28
Flush cutters, I use Channel locks at work, snap on P88145 In video
Channellock 758 7.5-Inch Long Reach Diagonal Flush Cutting Plier, Blue
Heat gun
Ryobi 18-Volt ONE+ Lithium-Ion Cordless Heat Gun (Tool Only) P3150
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