If the old switches that came with the Lippert stabilizers are still good, you do not necessarily need to switch them out (pun intended) if you install the Ultra-Fab Power Twin II # UF39-941705. The switch that comes with the Ultra-Fab Power Twin II # UF39-941705 is a 4-wire extend/retract switch, just like the Lippert 387874 switch so they will definitely be interchangeable if you don't want to bother with swapping them out. view full answer...
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