where would you mount resistors/cool them around combustibles?

[AuroraGirl]

i post this in others vehicles because i dont know of anything you would need resistors for, and my application is a sedan for turn signals(no flasher to change, have to do load resistors)

I have 50w 6ohm resistors i need to mount, 2 in front, 4 in rear. The front are not of concern, they can be mounted such thatthey have air flow or not touching anything painted, plastic, or etc.

Rear two are the problem. to mount a load resistor, I need to get the resistors to clear the trunk lid, mount it to the raised sheet metal portions and somehow insulate it from the carpet on the Lid/cargo in trunk while also not baking it to death......

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this pic is generic, but the trunk lid placement for the tail light bar means nothing can sit next to the tail light for clearance and heat.


Or im gonna need to wire it in MUCH earlier in the wiring harness or run wire back to/on the rear fenders, next to where the tail light is also present on the body of the car, which is also needing resistors. (ill post pic of what i have to work with soon, i have to take pics)

I dont have a problem running a wire back, but then im putting 3 resistors on one fender, presumably close to eachother, still needing to insulate from cargo and the trunk carpet. I can imagine thats a little warm of an idea. The other would be on other side of the trunk. There is a trunk pressure/heat/liquid/etc vent that is on passenger side, so it would have periodic exhaust times, just a plastic flap.

so that leads to the overall, overreaching part. Where can I mount these to not affect plastic, rubber, carpet, cargo from burns/fire while also keeping them cool?

I dont know how much heat they would make or what they can safely mount to, but on their own they get very warm after 5 minutes of turn signal operation(they are only heating when flashing, no current when off) in 40 degree ambient, mildly windy, open in the air(literally hanging in the air) to the point i cannot hold them. I did this test to simulate the best possible conditions in ambient air(other than 40 below) with sittting in traffic trying to turn. If it cant pass thgat test, then I assuredly need to work a scenario for 105 degrees, humid, in traffic, in a trunk full of **** lol

 

[Craig 85]

On my 2010 Denali XL I added LED bulbs. My resistors are mounted under the truck on a frame cross member. My case is a little different as my wiring runs outside of the vehicle. It's dark out, but if you want some pictures I can take them tomorrow.

 

[AuroraGirl]

On my 2010 Denali XL I added LED bulbs. My resistors are mounted under the truck on a frame cross member. My case is a little different as my wiring runs outside of the vehicle. It's dark out, but if you want some pictures I can take them tomorrow.

I never thought of external wiring... this might not be a bad idea. I have the trunk vent i could use to leave the car bay with, and I have a lot of area in the underbody that just gets dirt and debris, i could find a way to mount under and if i make water tight connections and perhaps a direct baffle from direct shots, i wouldnt have to worry about the car wash or water.. but maybe salt.. unless you have an insulated box or you found a way to craddle it on your frame rail. Could I see? Not a bad idea.

 

[Camar068]

I thought they made flashers for LED lights so you wouldn't have to install load resistors. I did a little googling and found this video. According to the video, this flasher will work with both LED and standard bulbs....even a mix of them. Just a thought.

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[Craig 85]

Sorry for the delay on this. The stupid power company did one of their power shut off for the past few days, so no internet.

Here's one of my resistors in the L/R of the truck. We don't have salt issues here. There is a small OEM inner mud flap to prevents direct spray, but I'm sure it gets its fair share. I did make sure to mount it high enough, so I doesn't get water logged when I launch my boat. I've had this set up for about 3 years with no issues.

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[AuroraGirl]

I could do something like that with my rear receiver, i think. still means running the wire lol

 

[wanderinthru]

Do the wires not come thru the fire wall on their journey to the rear of the car?

 

[AuroraGirl]

Do the wires not come thru the fire wall on their journey to the rear of the car?

The wires come through the middle of the back seat on the floor and run along the driver side to the quarter panel(fixed lamps) and along the hinge for the trunk(non-fixed lamps) while a wire for the other side split off at the center where it entered and runs the other quarter panel lamp. To run the resistors to the receiver i would need to run wires for the resistor all the way under the car which wouldnt be diffficult but would require at worst about 4 feet or so for one resistor