Second Circuit Powered When First Circuit Energized
Posted: Fri Jul 02, 2021 6:06 am
I have a 1988 Boston Whaler Revenge 20 WT. It has the original Boston Whaler Bilge Pump switch. I installed Lenco Trim Tabs about 2019. I didn't have any electrical problem until 2021.
I updated the original fuse block with a [Blue Sea Systems brand] 12-circuit secondary power distribution fuse panel. The were no electrical problems following this change.
Now in 2021, when the main key switch is in the OFF position and the electric sump pump switched is ON, the Lenco Trim tabs power on and off.
The power distribution branch circuits for the Bilge Pump and the Trim Tabs are separate, but both originate from the [Blue Sea Systems] panel.
I replaced the original bilge pump switch with a two-way rocker switch. The behavior of the trim tabs did not chance same.
I reinstalled the original Bilge Pump switch.
When I disconnect the Bilge Pump from the power distribution panel. the Trim Tabs will not work.
I traced all wires and found no short circuits or broken wires.
I put a test light on the negative side of the bilge pump wiring, at the fuse panel, and it lights when I turn on the bilge pump. No other circuit does that.
I'm stumped.
Has the [Blue Sea Systems] fuse panel failed in some way?
On July 1,2021 I will wire the bilge pump directly to the battery and see if that makes a difference.
Lastly, when I disconnect the negative cable from the battery, with all power systems in the off position, and reconnect it there is a large spark. This seems to me there is a dead short some where.
Give me suggestions on a remedy [to the problem of the effect of the bulge pump circuit causing the trim tab circuit to power on and off when the bulge pump is energized].
I updated the original fuse block with a [Blue Sea Systems brand] 12-circuit secondary power distribution fuse panel. The were no electrical problems following this change.
Now in 2021, when the main key switch is in the OFF position and the electric sump pump switched is ON, the Lenco Trim tabs power on and off.
The power distribution branch circuits for the Bilge Pump and the Trim Tabs are separate, but both originate from the [Blue Sea Systems] panel.
I replaced the original bilge pump switch with a two-way rocker switch. The behavior of the trim tabs did not chance same.
I reinstalled the original Bilge Pump switch.
When I disconnect the Bilge Pump from the power distribution panel. the Trim Tabs will not work.
I traced all wires and found no short circuits or broken wires.
I put a test light on the negative side of the bilge pump wiring, at the fuse panel, and it lights when I turn on the bilge pump. No other circuit does that.
I'm stumped.
Has the [Blue Sea Systems] fuse panel failed in some way?
On July 1,2021 I will wire the bilge pump directly to the battery and see if that makes a difference.
Lastly, when I disconnect the negative cable from the battery, with all power systems in the off position, and reconnect it there is a large spark. This seems to me there is a dead short some where.
Give me suggestions on a remedy [to the problem of the effect of the bulge pump circuit causing the trim tab circuit to power on and off when the bulge pump is energized].