ultra rs parking lights on w brake

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tresvatos

Copper - Posts: 102

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Joined: February 02, 2010

Location: Mississippi, United States

Posted: January 23, 2013 at 9:56 AM / IP Logged

I am having a weird issue with my Ultra remote Start Manual Trans. model 1272 installed on a 1990 ford ranger/ bronco II.

For some reason now the park lights which trigger a relay for fog lights come on now when I press the regular foot brake....

Has me somewhat baffled...Can anyone give me a good troubleshooting starting point?.

Thanks!

lucasoil4u

Copper - Posts: 317

Joined: May 11, 2009

Location: Minnesota, United States

Posted: January 24, 2013 at 11:08 AM / IP Logged

Diode isolate the parking light wire from alarm and brake wire.

Should take care of your issue.

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: January 24, 2013 at 11:46 AM / IP Logged

Or a poor ground in one of the rear light clusters.

Chris Luongo

Platinum - Posts: 3,746

This member consistently provides reliable information

Joined: May 21, 2002

Location: Massachusetts, United States

Posted: January 24, 2013 at 6:32 PM / IP Logged

I've seen this issue with bad dual-filament taillight bulbs, and also once in a salty, corroded trailer wire plug.

You could temporarily cut either the parking or brake wire from the remote starter and see if the problem goes away, but I think it's more likely to be one of the two above things.

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: January 24, 2013 at 6:38 PM / IP Logged

To repeat: Poor ground on the unit so no ground path. Pathway works back through other bulbs in the light cluster going back through the filament illuminating them.

Very noticeable here where all vehicles have separate amber 21 watt bulbs for indicators front, back and front side markers.

tresvatos

Copper - Posts: 102

Joined: February 02, 2010

Location: Mississippi, United States

Posted: January 28, 2013 at 9:49 PM / IP Logged

Great replies everyone! Really gives me some points to start testing! One other thing is that the bulbs are all LED park, turn , marker, and rear... Would this affect any grounds, since the LEDs are essentially a diode..?

tresvatos

Copper - Posts: 102

Joined: February 02, 2010

Location: Mississippi, United States

Posted: March 07, 2013 at 4:28 PM / IP Logged

well turns out it was just the LED upgrades were not providing a ground, so i repace two of the 194 bulbs with old filament halogen and no more lights on with brakes.

Simple fix after so trial and error.

thnx everyone!

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: March 08, 2013 at 10:51 AM / IP Logged

Which brings us back to the point made by Lucas, LED lights cause this grief and he has the right answer, diode the bake output to the R/S to cure the problem.

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ultra rs parking lights on w brake

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