Replacement Extend and Retract Switch for Bulldog Powered Drive A-Frame Trailer Jacks

Updated 12/28/2025 | Published 12/17/2025

Products Featured in This Question

Replacement Extend/Retract Switch for Lippert Electric Trailer Jack

(156)

$34.61

4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 26" Long

(2228)

$68.24

Question:

Will this switch enter change with a libra 3500 lb electric jack?

asked by: RD B

Libra Jack
(click to enlarge)

Expert Reply:

Hey RD. The Replacement Extend/Retract Switch item # LC49MD is not going to work with your Libra 3500 lbs electric jack. It's got four pins and it looks like your jack switch needs five or six.

We don't carry Libra jacks and there's no replacement part information on their website. You could try the Replacement Extend and Retract Switch for Bulldog Powered Drive A-Frame Trailer Jacks item # BD500363. It's got six pins and is labeled identically. It's designed for Bulldog jacks but it might work with your Libra.

I have linked a schematic below for the item # BD500363 that shows the functions of the pins.

expert reply by: Jerred H

BD500363
(click to enlarge)

Rd B.

12/17/2025

Jerred, I’ll check out the measurements and let you know. It looks like it will work. You did a great job answering the question on your web site, very detailed. Be blest and have a Merry Christmas. I’ll get let you know if it fits. Thanks

Jerred H.

12/17/2025

@RdB You're welcome! Thanks for the kind words, I hope you have a good Christmas as well.

Rd B.

12/27/2025

I installed the bulldog switch I ordered. But instead of following the wiring diagram that was for a Bulldog switch. I just placed the wires just like they were installed on the Libra switch. It worked just like it was supposed to. I did have to trim the hole where the switch about an 1/8” to make it fit.