Tow Ready Battery Isolation Solenoid

The item was as described. The directions were very accurate and installation was easy. Will be back for any other needs. 13770

Kit was sufficient to completely wire my 66 F100 for Electric brakes. I wrapped all wires under the hood with black tape and used original harness clips below the hood to cowl seal for a " factory harness" look. Truck is almost all original and a bit rusty but it's mine.. I wired an etrailer solenoid in line to trailer power, it is energized by the ignition and I added an led toggle switch under the dash to interrupt that circuit of needed. All the parts arrived in great condition and on time. 401783

Used this isolate trailer battery from car battery. This is third one I've installed and it works great. Learned something this time to clean up the wiring install. Window washer wire was right next to battery where this was installed so used that wire to hot it up when ignition is on. 359994

NO INSTALLATION INSTRUCTIONS included as promised!!! I was told when I ordered that printed wiring diagram would be included in package. No instructions were included with the product or on package. Had to call CS and go online to find them. Not too tough but needed clarification on which post was power in and which is power out. Just frustrating being told one thing at time of order and not receiving as promised. Product works as intended. 130589

The product is great but customer service is awful. I ordered this along with two other items and after a week of not receiving the items, I had to call to find out where my stuff was to find out that they had not been sent out. I cancelled one item and finally received my other products almost two weeks later. Buy from the other guys if you can find what you want. Shipping in two days! 406846

Had to change my order after submitted on the web and that was done quickly with help from a great customer service rep. Received the order quickly and all parts were as expected. Love the online video provided by etrailer in helping to chose the right product and installing it, it is hard to improve on perfect. 211298

After being energized 2 or 3 times this solenoid failed to open the circuit when denergized. After being tapped on multiple times with a screwdiver handle, it finally opened the circuit. The load was only what my Tekonsha Primus IQ brake controller with no trailer connected. Have not checked it since the van this was installed in has been laid up for winter. 355677

The faulty solenoid was replaced. Upon installation everything now functions properly. Customer service was most helpful and quick to solve this issue!

Tony B - 04/23/2018

It works, guess that means I hooked it up right! Not a lot of room to work with in the 2013 Honda Odyssey but turned out good. Should have moved it a little farther forward away from the air box and drilled 2 holes but I had a space to slide the left tab in and saved a hole. Yes it is very tight and grounded good. Going on a long road trip and now we'll have piece of mind knowing we wont be stranded out in the middle of nowhere for forgetting to unhook the trailer connector. 121803

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Things like vehicle radio and antenna motors for powered antenna are ideal for installing the relay in line. Either in your owners manual or on the fuse box itself, it should state which items are on while the ignition is on. You might consider using a fuse tap, which is a fuse you can attach a wire to and provides the 12 volts needed. Take a look at # F2526
Firestone Fuse Circuit Tap Kit
$16.71.

-- Rachael H - 12/1/2014

Still working like new 1 year later. No problems at all so far.

Gerald M - 03/23/2015

My camper stopped charging the coach battery. Tested an found the isolator wasn't passing power thru. Searched online and this was the least expensive (by far in some the cases). Quick shipping, easy install and charging again. I am a happy camper! Thanks! 560213

There were a lot of different isolation solenoids to choose ftom. This was perfect for my small utility trailer. Delivery was scary fast. 477684

My truck came with only a four pin trailer connector. I installed a seven pin connector received from etrailer and realized I needed to prevent battery drainage on my truck caused by the trailer battery charging when the truck engine wasn't running. The battery isolation solenoid provided a perfect solution. Great product at reasonable price. As usual etrailer exceeded my expectations with next day delivery. 522664

by: Whitney T10/13/2017

It's a relay/solenoid! Works great so far. We got this to wire our small teardrop for underway charging. I found an ignition-switched voltage source in the engine bay, and now I don't have to think about whether or not I've unplugged the trailer. Would use again. 442297

This is being used as a battery isolater in a 2006 Class C RV, replacing a failed Motorcraft part. It worked after installation, we’ll see how long it lasts! Only complaint is that the terminals for the battery connections partially obstruct the mounting flange making it a little difficult to install, especially when there is not a lot of room to work. 543530

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Very happy with product construction didnt get to install it yet since it has been raining everyday since I recieved it,shipping was fast and overall experiance with etrailer was very good and I will be buying more from them and will definitely recommend to others 200192

The product was exactly what I wanted for the amount I was told it should cost. I wish there would have been instructions there just to make double sure I know what I'm doing but it's easy to find it online. 329768

Ive been remiss at installing it. I think I know what to do now but Im still somewhat unsure. Again, the directions would have been easier to do if there were a bit more there.

Kelly H - 01/04/2018

by: Steve B10/25/2016

it's a simple part that just works as designed. Once installed it's good to know your trailer Isn't draining your car's battery when shut off you car and park overnight or out to dinner or lunch with the trailer cord connected. Much less likely to have any battery issues or forget to replug in the trailer and drive off and have no trailer lights working. 310521

Works... instructions not included 440111

Works

Steven L - 10/06/2018

This is my third order this year. Every order on time. Great quality,fair price,love the how to videos . 640588

Works well. I wish it was a bit smaller but it is high amperage. 639009

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excellent business to to work with 633173

Good quality, continuous duty, perfect fit. Using as battery switch between start and house batteries on my boat. Flip a switch and go, no longer have to get up and go to the stern and crank a manual switch on a bouncing boat in rough water. 608191

by: Mike02/23/2019

Does exactly what I needed; prevents the trailer from discharging the tow vehicle battery when ignition is turned off. 607586

by: Joel02/12/2019

Exactly what I was looking for. Works well so far. 604520

only complaint is that no instructions came with this part. 584373

The product description overview video linked above will actually run you through how to wire the solenoid. The terminal on either side is used for the incoming and outgoing power it doesnt matter which terminal is used for which and the center terminal is used to an ignition switched circuit. The radio circuit is frequently used, because it powers down when the ignition is off.

-- Mike L - 11/21/2018

Received the solenoid and installed the same day. No more disconnecting the trailer plug over night and forgetting to reconnect in morning. Etrailer delivers!! 583740

JUST WHAT I ORDERED AND SHIPPED VERY PR OMPTLY. 581196

delivery was so fast the product was great and shipping was really less than all the others, thank you for being concerned for the buyer and not just to make all the money you can - like some of the others. 567654

Just what we wanted for rebuild. Looks great, good function 559439

just what I was looking for 470236

Works exactly like I wanted, this should be part of any trailer wiring kit 459662

by: Ray10/28/2017

Working well 446945

This is just the product that we wanted at the right price. 409676

It looks exactly like the picture I have not hooked it up yet but I'm sure it will work fine. Shipment was fast and accurate. 372784

by: Jack M.04/08/2017

This simple device save the worry of forgetting to disconnecting the car from the trailer and the hassle of a dead battery when you do. 364573

by: jesse02/12/2017

Works as stated and no problems 343629

by: Carl01/14/2017

Works great in the circuit I installed in my truck to charge my trailer battery while driving. Etrailer is my go to for my rv needs. Great prices and fast shipping are the norm. 332554

excellent product, sturdy and well built... order was delivery exceptionally fast too!! 305471

Great product. Great company to work with. Excellent customer service! 302281

I had a problem with install due to my own fault. Etrailer was very helpful. I got excellent service.. 285961

Easy to order, fast shipping. 276421

by: Abel03/21/2016

Great product and fast delivery. 241180

looks good and good price 188882

Great service from ETrailer, as always. I don't like my 7pin "hot" when I'm parked. This solenoid does the trick. 111356

Good customer service, prompt shipping 108858

Perfect replacement. Works great. 107987

just what I wanted. Excellent customer service too. 62725

Very high quality and works perfect. 58093