EFI 3 vs INJ fuses

The add a fuse just makes it simple, as the INJ and EFI3 are not constant hot wires, only on with the engine. I am not sure if there are other wires under the hood that would also be capable of being tapped, or if you would have to run a new line from under the dashboard.

 

Ok cool. Thanks for the response. I've since tied it to my low beam fuse and it works bit not planning to leave it there. I'll run it by here again if I'm able to tie in anywhere else.

 

So I've read through the posts. For someone who owns a 4 banger, the INJ fuse tap is the way to go? Downside is it will turn off and on after the truck being turned off? If I really want something off and completely off, is to tap into the low beam fuse? Since my DRL is not on a dedicated circuit, correct? I'd prefer it to run when the DRL are on, but I only want to tap into a fuse....so INJ is the way to go?

 

For SR / SR5 I can do a T harness (not currently listed but I believe it looks like the tail T here) but the downside is that grille lights will flash with driver turn when parking lights aren’t on.

I could do something with three diode modules and two T harnesses. It would be overkill but fun.

I need to list an SR / SR5 T harness item.

 

I was reading through this post to see if I could find an answer to a question I had about the 20a D INj fuse and kind of found it while reading a post above, but then I was left with another question I can't find an answer to. Maybe you guys can help,
If I have 2 sets of raptor lights (8 lights total) and I have one set (4 lights) tapped into the 10a INJ fuse, where would I put the other add a fuse so the second set of lights also comes on when I turn my truck on exactly like the 10a INJ fuse?

TIA

 

splice both into the same wire from the one add-a-fuse. I believe I measured my 4 lights at 100 mA so 8 would be around 200. If you want, measure with a multi-meter to see for yourself. It's difficult to find 1amp fuses, most of the time 2 is the smallest you can easily get and 5 is typically used, more to protect against shorts than anything.

But if you want something more elegant, I have several T harnesses available for this purpose which allow using the stalk to turn off but on with DRL or Parking Lights.

 

Thank you Sir. I could definitely splice them together, I'm not sure why I didn't think of that. Just curious, what are the costs of your T harnesses?

 

https://fbchs.square.site/product/t...true&sa=false&sbp=false&q=false&category_id=7

Or if you want to also get OEM LED:

https://fbchs.square.site/product/t...true&sa=false&sbp=false&q=false&category_id=4

 

Hi bro, I’m experiencing the same issue at the moment… what fuse did you plug the fuse tap into? And did the headlights stop turning on even when the car is off?

 

Hi I have a 2022 TRD Pro, I added the raptor lights to go he fuse box but removed them after it was causing a bunch of errors and the truck to shut off a month ago. Removed them and didn't have the issue again. Has anyone else had this issue? Id like to use them but I don't know if I was just plugged into the wrong fuse

 

I make an LED T harness for you lucky ducks with factory OEM LED headlights. A bit slicker install, no fuse box bs.

 

LED T harness?

 

https://fbchs.square.site/product/tacoma-2020-led-t-harness-with-grille-lights/8

 

so basically 99% of people in this thread are plugging an add a fuse in wrong polarity making their injection fuse go thru a 2-5 amp fuse instead of a 10? pretty confused right now on how to correctly plug in the add-a-fuse. if i understand right, the power comes in on the top side of the fuse near the silver bolt in the picture. the addafuse, looking at it from the top at amp numbers, wire sticking out the right side, has power going in on the left prong. I am able to put in the positive prong to the positive side of the fuse but its not ideal? im missing something here. just paranoid after watching that tacoma owner frying his system using a bad fuse he got off Amazon.

 

It's not a concern. The INJ circuit is not subject to the additional fuse, just the lower one, it's the additional circuit which is fused by both.

There are two poles on the OEM fuse, one is hot from the battery, one feeds the INJ circuit and should be "protected" by the fuse.
The ideal add-a-fuse configuration is the input pole on the hot side, each circuit independently fused per the rated need, feeding their respective circuits in parallel.
Due to the fuse box layout, the add-a-fuse for INJ must be installed in the opposite direction. That simply means that the additional circuit is now in series with the INJ fuse and could therefore, with a really dumb fuse configuration, potentially blow the INJ fuse.

INJ is 10? So, say you fused a 30 off it and tried to power up something which takes 25 amps, you should melt the INJ fuse but the 30 should be OK. Simply replace the INJ fuse and you're back to normal once you've fixed the problem. But running 25 amps off an add a fuse is pretty insane and you earn whatever problems you create by doing something like that.

It's not a massive deal for 100 mA grille lights or a trigger to a relay.

 

this is what I was thinking. I had to hook up the ignition wire for a winch. The wire is super thin, maybe even takes less power than the led lights.

 

My raptor lights came with a 15 amp fuse and an empty slot in the add a fuse it came with. I put the ten amp fuse from inj slot into the empty slot and plugged it into the inj with both the 15a and 10a fuses. is that ok or will it cause problems from too much amps?

 

its all too confusing for such a simple thing. they have very little power draw as its just a couple tiny leds, so 15-10 amp would be overkill by a huge margin. a 2 amp seems like a better match. but then you got raptor lights on caliraised that advertise 2000 total lumens, which a 15 would prob be ok but theres no f-ing way they give off 2000 lumens total, would melt the plastic housing they are in. only safe way to go about it is to measure your amp with multimeter and get an appropriate fuse. do not buy fuses from Amazon, they do not work.

 

Anyone know if there’s a way to get the rapid lights to only turn on in conjunction with the day time running lights?

 

Rapid lights?