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Details about  Truck Trailer Plug Test both 7 Round Blade & 4 Pin Circuit Fuse Light Tester

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Truck Trailer Plug Test both 7 Round Blade & 4 Pin Circuit Fuse Light Tester
Item Sold
Item condition:
Dec 11, 2013
US $9.95
$4.95 Standard Shipping | See details
Item location:
Seneca, Illinois, United States

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Seller assumes all responsibility for this listing.
Last updated on  Sep 20, 2013 12:42:08 PDT  View all revisions

Item specifics

Condition: New Part Brand: IIT
Warranty: Yes Manufacturer Part Number:



Trailer & RV Sales, Parts Service and Rentals
270 E Jackson Street 
Seneca, IL 61360

Robin and Paul

Both a 7 Blade and 4 Pin Trailer plug Tester

Have you ever been just about to leave to a job site or go on a vacation, only to hook up to your trailer to find that your lights are not working and have no idea what the problem is? Never will this happen again with this tester! This checks to see of the 12V power is running from your tow vehicle is reaching your trailer plug or if there is something wrong with the wiring.

Most of  Today's trucks have dedicated fuses for the trailer wire circuits, so until now, you really had no way to check and test fuses and trailer power, to confirm the truck is working as it should!

Easy to use
  1. Plug your tester into the tow vehicle's towing plug
  2. Operate vehicle's turn signals, lights and brakes
  3. When the power is present, the tester's green LED light will glow

I also have these trailer cords in other lengths and styles, CLICK HERE to see them

Need help sorting out the wire colors?  Click here for help!

Please contact us if you have wire questions, we un a full service trailer repair shop, so we re-wire trailers daily! And remember, you can not depend on wire colors alone, you should test your particular trailer wire system. we offer phone assistance, but can not be responsible for improper wiring done by the customer..

Trailer Connector RV Style 7-Way Blade with molded lead.

  • Pre-wired 7-Way Trailer Connector
  • length is including connector
  • Wire gauges:
    • 14 gauge - red, brown, green, and yellow
    • 12 gauge - Blue
    • 10 gauge - White and Black

Wiring Code
Molded Connector           
Usual Trailer Wire
White Wire Ground White Wire
Red Wire Left Turn and Brake Yellow Wire
Brown Wire Right Turn and Brake Green Wire
Green Wire Tail Lights Brown Wire
Blue Wire Brake Power Blue Wire
Black Wire 12 volt (hot lead) Black Wire
Yellow Wire Aux. -



  • Items under 90 pounds are shipped regular ground service by the lowest cost method
  • We ship using USPS (Mail) and UPS at our discretion, based on lowest cost- (You must provide both mailing and physical shipping address, if different).
  • Priority Mail or First Class Mail is used for small packages
  • Shipments to Alaska, Hawaii, and Puerto Rico may be charged a shipping cost more the amount listed for this item, please ask before you bid.
  • Tracking numbers are automatically emailed to your eBay email address the morning after your item ships

We will ship outside the United States, please contact us for shipping quotes.

We will ship overnight UPS or  for actual shipping cost. Please Call if your order is time critical. Sometime e-mails get delayed...
Normally we ship M-F, within 24 hours of payment (weekend/holiday purchases are usually shipped the first business day)


  • All eBay purchases can be paid by PayPal, COD, or any other payment method allowed by eBay.

  • You may call our store at - 9-6 M-F, CST,  and pay over the phone with a VISA, MC, or Discover.

  • Shipments within Illinois are required to pay 6.5% Illinois sales tax.

  • All eBay items are eligible for pick up at our store, 270 E Jackson Street, Seneca, IL 61360 For pick up, Click here for directions .

About Us:

We are a small Family company, just my Wife, Myself and sometimes our children to help. We have been in business over 6 years, and currently stock over 200 trailers of all types, with full service department and parts inventory. We pride ourselves on warm friendly customer service, and a honest, personal approach to doing business. Look at our feedback, and rest assured you are dealing with solid, knowledgeable company!

Paul and Robin
Robin and Paul

 R and P Carriages
270 E Jackson Street
Seneca, IL 61360

Phone number -,
Fax number 815/357-9920

Or Hours are 9:00AM to 6:00PM, Central Standard Time, Monday through Friday, and 9-3 Saturday

We offer a full satisfaction guarantee. If you are not happy, let us know. We are reasonable, so give us a chance! We allow returns, refunds or exchanges, so purchase with confidence. For direct contact with our problem Department, email us at - (our hours are 9-5 M-F so give us a chance) otherwise you can call - 9-5 CST M-F for a faster response.


Puerto Rico , Alaska, Hawaii and other areas outside the 48 Contiguous States may have higher shipping cost, contact before paying, for shipping Rates and Terms, and agree to shipping terms 

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