• Does Pro Plug have circuitry to prevent feedback from a towed vehicle that is connected through it?

No, appropriate anti-feedback devices need to be installed at the location where the   potential feedback is created, ie: where the connection to the towed vehicle wiring is made.    

• After installing a Pro Plug in the bed of my new GM pickup, the indicator on the dash warns of a problem with the trailer brakes with no trailer connected.

The brake (BRK) LED in Pro Plug draws enough current that the body computer in        the pickup  senses that there a fault in the wiring. This is easily remedied by turning the TEST screw counter clockwise 1/4 turn which will turn off the LED, the battery charge (BAT) circuit and backup light (BUP) circuit LEDs will also be turned off.  

• I drove away from my trailer without disconnecting the cord and broke the cap off of my Pro Plug, can I get a replacement part without replacing the whole unit?

Yes, unlike most connectors on the market, Pro Plug can in most cases be serviced with  replacement parts, just call or email using the contact info under the PURCHASE tab for assistance.   

• What is used to mount ProPlug that does not require drilling holes in the mounting surface?

Pro Plug utilizes a 3M VHB (Very High Bond) urethane adhesive foam pad on it's back surface that when properly installed on most smooth surfaces will be able to hold over a 1/2 a ton.

• Are the LEDs in Pro Plug on all of the time or just for testing?  

The there are 6 LEDs in Pro Plug, the Running lights, Left turn signal, and Right turn signal LEDs are on when those lights are used on the towing vehicle. The other 3 LEDs, Backup, Brake, and Battery have the ability to be turned off after testing as to minimize battery drain on vehicles that are not in use for long periods of time and insure correct brake control operation. 

• The pigtail connector from my trailer doesn't seen to plug all the way into Pro Plug?  

The socket in Pro Plug has been designed and tested to be compatible with many 7 way  connectors and molded pigtails on the market. Unfortunately there seems to be many subtle variations in trailer pigtails, especially the molded ones, that may make them difficult to plug in. The terminals in the Pro Plug socket will be stiff for the first few uses. The connector being plugged in should have clean, aligned and lightly greased terminals.