Winch power isolation

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Jeep jeeep

Rank I

Contributor III

154
Phoenix, Arizona, USA
First Name
Scott
Last Name
S
Any recommendations which brand of relay/solenoid to use for a 12k winch power cutoff? The spec sheet says it pulls close to 400 amps at full load and I would like to avoid a melt down if I ever have to work it that hard.
 

MidOH

Rank IV

Off-Road Ranger I

1,298
Mid Ohio
First Name
John
Last Name
Clark
Ham/GMRS Callsign
YourHighness
Your winch already has relays. Just make sure they work. I'm pretty sure that Murphy has something to say about an isolation relay between your winch and battery.........

I just get out my 4mm wrench and disco the winch cable at my battery clamp. It's the cable that gets damaged and ruins your day. Hundreds of people have done what your thinking. All of their winches are connected directly to the battery now.

If you must, these isolator switches are proven:

And the darn relay you asked for:

Another relay:
 
Last edited:

slomatt

Rank V

Influencer I

1,723
Bay Area, CA
I put a 300A fuse inline with my Warn M8000. This way if the positive wire ends up shorting to the frame the fuse will hopefully blow before the truck burns down. The fuse is installed in a way that allows me to quickly bypass it if needed.

Picture is with the cover removed.
 

Jeep jeeep

Rank I

Contributor III

154
Phoenix, Arizona, USA
First Name
Scott
Last Name
S
Your winch already has relays. Just make sure they work. I'm pretty sure that Murphy has something to say about an isolation relay between your winch and battery.........

I just get out my 4mm wrench and disco the winch cable at my battery clamp. It's the cable that gets damaged and ruins your day. Hundreds of people have done what your thinking. All of their winches are connected directly to the battery now.

If you must, these isolator switches are proven:

And the darn relay you asked for:

Another relay:
I subscribe to the "there's no kill like over kill" theory. Had a buddy who's winch went active after taking a short bath, the aftermath wasn't pretty. Thanks for the info.
 

Jeep jeeep

Rank I

Contributor III

154
Phoenix, Arizona, USA
First Name
Scott
Last Name
S
I put a 300A fuse inline with my Warn M8000. This way if the positive wire ends up shorting to the frame the fuse will hopefully blow before the truck burns down. The fuse is installed in a way that allows me to quickly bypass it if needed.

Picture is with the cover removed.
All ready have a 350amp inline, Just trying to prevent the possibility of unauthorized activation, nice mount.
 

Desert Runner

Rank VII
Launch Member

Expedition Master III

8,507
Southern Nevada
First Name
Jerold
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F.
Member #

14991

Ham/GMRS Callsign
/GMRS=WREA307
All ready have a 350amp inline, Just trying to prevent the possibility of unauthorized activation, nice mount.
I wanted a switch. Having GM side mount cables, meant more time to loosen and remove vs top post mounts. Having a OEM dual battery setup without a Isolater just complicated the issue. Got mine off of Amazon, mounted on the top bumper wing of my ARB. It also helps with any parasitic currant draw when not being used.



Fastronix High Current Master Battery Disconnect Switch with Face Plate

Size:2-Post
 

Jeep jeeep

Rank I

Contributor III

154
Phoenix, Arizona, USA
First Name
Scott
Last Name
S
I wanted a switch. Having GM side mount cables, meant more time to loosen and remove vs top post mounts. Having a OEM dual battery setup without a Isolater just complicated the issue. Got mine off of Amazon, mounted on the top bumper wing of my ARB. It also helps with any parasitic currant draw when not being used.



Fastronix High Current Master Battery Disconnect Switch with Face Plate

Size:2-Post
Thanks, this would be option "B" for me. I going with a rocker activated solenoid. A pillar mounted with one that is master power for the bank, winch-compressor and inverter. No high draw without the key/engine on. Call me paranoid.