Bruce M

I'm wired into dome light, and laser portion goes nuts when I blow horn...any ideas?

RKA

If so, the 3rd brake light on that Trailblazer will set off your laser alert. Same with a few select other vehicles.

Bruce M

You saw the Trailblazer too? No, happens anytime, anywhere.

RKA

horn and dome lights are wired on the same circuit (same fuse), and the horn draws too much current, temporarily disrupting the power supply to the V1. Somehow, this slight change in power to the V1 sets off the laser alarm. If you wanted wild unfounded guesses, there you go....

Bruce M

Sounds plausible...will choose different circuit or just give people the finger and not use horn.

O.W. Kenobi

Why did you do that? Re-wire it into the fuse box (probably easier anyway).

yourk

wire may be damged.. make sure the wire isnt being squeezed or pinched

GreekDeno

Correction: the remote display works off the cig lighter.

RKA

call Valentine, and ask them to ship out a new DPA, and see if that fixes your shorting issue.

GreekDeno

Just talked to Valentine. Fuse is 1amp ~50volts. He said to check the phone cord from dpa to unit