hey guys, just installed a new brake light switch ,under the brake pedal, two days ago. driving today and when i hit 60KM's per hour the ABS and parking brake light come on on the instrument panel. shut truck down and lights stay out till i hit 60 again ??? 2001 Dodge ram,1500,4x4. any thought would be appreciated. Thanks. Fred

 

You might have your rear wheel speed sensor going out on you. If I remember correctly, that sensor going out will trigger the ABS light, not sure about the parking brake light though. You might have some wires misconnected or something of that nature..

 

Are you're brakes still working fine? This happened to me towing a 7000 lb load on I-40. Brakes were doing great until I was at around 70 mph for about a mile and a half, both lights came on, and I almost completely lost my brakes. Had them back the next morning. Replaced almost everything after an experience like that and haven't had another problem since.

 

ya , brakes are working fine , just like normal. that when through my mind when the lights came on so i got on them to see , and worked great, and still do.

 

I got 240,000 and the lights have been on for 160,000 with no problems all work well even the abs I thought is was just like haveing christmas lights on the dash.

 

Brake and ABS lights are usually associated with the ABS/speed sensor on the top of the rear diff.

 

I have the same issue and replaced the sensor on the rear diff and in the transmission. The only thing left is to check for a pin hole in the brake line. But everything is fine. So just some food for thought.

1. Check for pinholes in the brake line
2. Check brake fluid
3. Replace speed sensors.