Tail light power upgrade

[crispyboy]

This thread is more for folks with older tow vehicles.
When getting ready for my last trip I noticed that everytime I plugged the umbillical cord into my old pickup the tail lights would dim on the truck. When the trailer was not connected the truck lights would function perfectly and be very brights
I checked the voltage at the connector and only found 7 to 10 volts. Ugh!
I purchased a little device made by Tow Ready Modulator HD part number 118190.
This device literally made night and day difference in the intensity of the tail lights. I would highly recommend this if your having any voltage drop at the connector.