does it need a relay
251670
No, it's connected to the battery. They will instructions with it. Easy to install.
251671
I have never seen a charger that needs a relay. As long as they are attached + to + and - to -, all you should have to do is plug the charger in and let it do its job. Of course, make sure the connections span the entire bank of batteries. If you have questions how to do that, l suggest you have someone familiar with connecting batteries in series look at the wiring before you plug it in.
251672
No relay needed. 1Positive wire from meter to battery number 1 positive lead. And 1 negative write from meter to last battery negative. Voila!
251673
No you do not need a relay.Just hook the positive or + terminal on the gauge to the + terminal on the right battery and the - terminal on the gauge to the battery directly behind the one where you hooked the + to.Hope this helps.Coy
601805
yes, they come with a relay, wiring and a switch, but you may want to upgrade to a better switch, the one it comes with attaches with double side tape.
231953
Yes, if you use two horns you will need a relay. If you use one horn a relay is not necessary. It's a good idea to use an in line fuse if the circuit doesn't already have one.
265267
No relay is required, led is low draw. Mine works great, had 1 issue, had to resolder the positive wire to the board . But works great, lots of light.
2194201
I installed it on my GMC truck. It works well and has a long range too. It locks the doors, blinks the lights and honks if you push it twice while locking it. I didn't need any additional relays.
96094
I used these on a 2007 Jeep SRT-8 and they required no relay. They plugged directly into the factory harness. Very easy install.
674281
Yes you still need the relays and fuses. You can splice in but this makes things nice and neat and in salt areas will last much longer.
1049559
It would make life much easier if you did. There are some great relays sold here on Amazon.
1727298
It's a mechanical relay and makes a click, but it is not very loud. There are ssr "relays" available. Make sure to use a good heat sink if you need to switch any real current.
881722
well it depends, i dont think you need the relay, but you may need the harness if your car has never had an alarm before. just to note, this works more like a factory alarm, nothing fancy, its just to open/close doors etc. If the alarm is going off, you would get any indication on the remote
1262523
Yes, there is also a relay and a lot of wires, all that you need to install them, some skill is required for the wiring.
1467099
They do NOT come with a relay. You can order the wiring kit.. For my application, I split up lights and put 2 each on an ATV & UTV without using any relay.. they are working fine.
2194200
I installed it on my GMC truck.It works well and has a long range too.It locks the doors, blinks the lights and honks if you push it twice while locking it.I didn't need any additional relays.
2263021
Did for mine. I had originally installed the HID bulbs without relays and found that to be unacceptable. This harness solved my problem but again using HID bulbs which draw less current. 14vdc is optimum; relay will work with less.
1720915
There might have been one but for what I was using it I did not need one All you need to know is that you need a ground circuit to either of small terminals and ignition to the other small terminal and for either large terminal one to battery side usually an 8 gage cable and the other side to a starter or whatever you need to apply 12 volts to or if you need a 24 volt system you need a 24 volt relay This is usually used for a dual battery system also
423734
I am not using a relay and haven't had any problems. It works just like it should using only a switch.
316844
Yes, you'll need a large relay. This has output for a Solid State Relay. Depending on your voltage, you'll need a very large SSR and heat sink for 15Kw. Consult an electrician or a competent engineer if you're not totally confident in the entire setup.