Sep 26, 2019 - 06:35 AM
Secure the jack with three Grade 5, 3/8in.-16UNC bolts and washers. Remove paint from around one bolt hole on the jack, and from around the matching bolt hole on the trailer tongue. If the paint layer is thick, add a flat washer between the jack and the trailer to provide good contact. Exposed metal can be painted after assembly to prohibit corrosion. Bolts should be tightened to 15-20 ft.-lbs. Tip: The salvaged bolts from the old jack are acceptable for reuse if they are Grade 5 and in good condition.
Route the wire lead from the plastic cover along the trailer to the battery. Attach the wire lead to the trailer using cable ties or the equivalent.
Connect the wire lead from the jack directly to the positive (+) terminal of the battery. This unit has a built-in circuit breaker which automatically trips and resets. Reconnect the battery ground cable. This unit is available with direct grounding wire to trailer battery, one hot wire (black) and one ground wire (white) for direct and better grounding.
If that doesn't fix anything let me know.