HELLA 007794311 12V 20/40 Amp SPDT RES Relay with Weatherproof Bracket
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Yes, 12 volt DC can be used to energize it. I didn't understand the amp rating question, but the description says 20/40, so I assume it will carry a certain amount of current when energized and a different amount of current through different poles when de-energized. pumped up
they are the same
Yes, it consumes more than the lights' current draw (7. 5A). However, you will also need to purchase the relay's socket (which is sold separately) in order to make everything work with their kit. Otherwise, it won't withstand the elements.
China is where these were made.
Selected User Reviews For HELLA 007794311 12V 20/40 Amp SPDT RES Relay with Weatherproof Bracket
To control the brightness of the headlight led, I used this relay and a connector. I wanted to have 100% brightness with engine on and switch to 50% brightness with low beam on and switch to 50% brightness with low beam on and switch to 50% brightness with low Because it's waterproof, I planned to simply leave it in front of the fuse box in my car, which has a very limited engine space. Everything was connected correctly, but the 10amp fuse on the add-a-board kept blowing. The ignition fuse slot is connected by a line. I replaced it with a less expensive 'Parts Express 12 VDC Waterproof Relay SPDT 30/40A' after blowing five fuses, and guess what? I was able to get to work right away! And, because it was smaller than Hella, I was able to tuck this replaced relay inside the fuse box. I'm not sure if it's because Hella's 20/40 amp isn't as powerful as Parts Express's 30/40 amp. In any case, it was ineffective for my headlight project. br>br>Edit: I recently read a few connector reviews, and several of them claimed that the pin numbers were mislabeled. Maybe that's why I couldn't get it to work. So, if that's the case (since this is a matching pair with connector), I'll give it a one-star rating for meeting my 30-minute deadline. The project took a half-day to complete. in addition to posing a threat to me.
I haven't put it together yet, but it appears that I chose the correct relay and wiring harness. I looked for a long time (much longer than I should have for such a silly relay) and realized that I could have gotten by with a less expensive version. However, because this relay will be used to switch power to an accessory block on my motorcycle, I needed something that would be dependable. I'm only going to install heated grips at first, but I might add more later. This is a reliable relay. It's far superior to the average auto relay, and it's made by a reputable company. The harness is equally impressive, with load-carrying wires of 12 awg and the rest of the wires appearing to be 16/18 awg. It was also a good length, which seemed to be a common complaint with the less expensive items. Weatherproofing is also included on the relay and harness, which isn't required but is a nice touch. The connections are extremely strong - I could have saved a lot of money if I had just bought an average relay and used spade terminals instead of a harness. I spent $30 on this set-up - However, I'm glad I chose the superior relay.
This is a fantastic relay. The pinout is printed on the front of the relay, which I consider to be the front, so you know which pin goes to which wire in your harness. To go with it, you'll need the Hella H84709001 harness. The only thing to keep in mind is to stick to the relay pinout rather than the harness's color code. The ground and switch wires have been switched in that harness. 85 is ground, 86 is switch, 30 is positive to 12v battery, and 87 and 87a are connected to the positive leads of whatever you're powering; which 87 to use depends on what you're powering. I used this for a light bar on my 4wheeler, and because the light is 12v accessory switched, I used the 87a to wire it. Because I'm not an electrician, I was ecstatic when it worked the first time.
In comparison to a Chinese-made product, I expected HELLA to be of higher quality. Unfortunately, when this item arrived, it was also made in China, and most likely in the same factory as other lower-cost items. priced at a bargain models that have been taken off It works and functions as expected and has yet to fail, but it is yet another example of a well-established company outsourcing manufacturing.
They're also on a lot of the machines I work with. It's the most efficient method.
Any 12v circuit will benefit from this relay. I bought a couple of these for my Yamaha Rhino side by side because the previous owner had made a rat's nest of wiring and I needed something to help me figure out what was connected to what and where. If you're adding aftermarket electronics, I'd recommend these to ensure that your system is protected from issues.
My problem was solved as soon as the relay was turned on.
Bulky, but when paired with the waterproof socket (sold separately), it appears to provide a good seal. The mislabeled wires are inconvenient, but the thin wires clearly represent the relay COIL, while the thick wires represent the relay CONTACTS.
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