Today on this old horse trailer we are going to replace the break a way switch. And we are going to be replacing with part number 420000 Tekonsha, the first thing we need to do is remove the old switch. Its rib bitted into place so the first thing we need to do is drill out the rib bits and remove it, and also disconnect the wiring. The wiring underneath is a junction point here, and also a… see more >