It's aDC circuit - if the harness is still connected, the harness will still have its effect on the cicuit voltage. Only if you are checking the voltage available to the SWITCH, with the switch disconnected, would 1V be a bad-thing-not-blaming-the-installers-for thing...

Christopher Gronski <gronski@GMAIL.COM> wrote:  Agreed, but I'm measuring voltage BEFORE the trailer harness, and only
getting 1 volt. As much as I'd like to blame the trailer guys I
actually don't think it involves what they did.

Chris

On 12/25/05, Rob wrote:
> At 12/25/2005 02:36 PM, Christopher Gronski wrote:
> >Right now I'm only getting 1 volt at the brake lights with the pedal
> >depressed.
> >
> >Chris
>
> I'd take a look at where the trailer harness tapped into the brake wire.
>
>
>
> Rob
> becida@comcast.net
>
>