Wiring LED's into high beam circuit - JeepForum.com
 
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post #1 of 10 Old 07-03-2019, 10:09 AM Thread Starter
yoyoyo109
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Wiring LED's into high beam circuit

Hi everyone, I was looking for information on wiring my LED pods into the circuits for my high beams while also maintaining the manual turn on switch I have.

I know that the amperage draw from the relay should be negligible but I wanted to confirm that it shouldn't be enough to cause flickering in my JW Speaker headlights. If so, I was wondering where the best place to tap into the "High-Beam Turn-On" signal would be

Since I will have two input sources going to the relay, I will be splicing a positive diode into the signal wire coming off of the high-beams. That way if I turn the LED's on manually my high-beams should not also turn on.

TL;DR Where is the best place to get a relay turn-on signal from the high-beams turning on?

Thanks!


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post #2 of 10 Old 07-03-2019, 12:52 PM
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The signal comes from the PCM to the relay in the TIPM. That relay is soldered onto the PCB in the TIPM. Just tap into the high beam wire. It's a PWM source but if you use a relay, the draw will be negligible.

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post #3 of 10 Old 07-03-2019, 01:05 PM Thread Starter
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Quote:
Originally Posted by cranbiz View Post
The signal comes from the PCM to the relay in the TIPM. That relay is soldered onto the PCB in the TIPM. Just tap into the high beam wire. It's a PWM source but if you use a relay, the draw will be negligible.
Thanks for the response. I have one relay per light pod. Should I tap one into each high beam to make sure the brightness is the same? Or will the draw truly be so negligible that it won’t impact one high beam to have two relays signaled from it?

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post #4 of 10 Old 07-03-2019, 01:17 PM
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Quote:
Originally Posted by yoyoyo109 View Post
Thanks for the response. I have one relay per light pod. Should I tap one into each high beam to make sure the brightness is the same? Or will the draw truly be so negligible that it wonít impact one high beam to have two relays signaled from it?
As long as a single relay has enough current capability, I would use just 1 relay for both lights. Only power the relay coil from the high beam circuit, power the lights from the battery.

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post #5 of 10 Old 07-03-2019, 01:34 PM Thread Starter
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Originally Posted by cranbiz View Post
As long as a single relay has enough current capability, I would use just 1 relay for both lights. Only power the relay coil from the high beam circuit, power the lights from the battery.
Sorry, I misspoke. One relay per pair of lights, one light draws 80W 5.79A so each pair draws 160W ~12A

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post #6 of 10 Old 07-03-2019, 01:49 PM
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A single relay will be sufficient, and probably better since the TIPM is very sensitive to current draws. You want to stay as close to factory specs for current draw on any circuit you tap into.

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post #7 of 10 Old 07-06-2019, 04:22 PM Thread Starter
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Originally Posted by Kruzin View Post
A single relay will be sufficient, and probably better since the TIPM is very sensitive to current draws. You want to stay as close to factory specs for current draw on any circuit you tap into.
You don't think there could be issues with power supply?

Before starting this rewiring process I had two lights on one relay each and I've noticed the plastic on the connector for each relay has become very warped as though it was slowly melting. I had assumed the heat was just too much for the connector to handle, I plan on reusing the relays but using shielded female connectors to connect to them.



If one 30/40A relay is really all that's necessary however, that would make the installation significantly easier.

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post #8 of 10 Old 07-08-2019, 11:11 AM
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If the wires from the relay to the lights is not heavy enough, you will generate heat. That heat can be enough to melt the connector plastic. Up the size of the wires to the lights to decrease the resistance.

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post #9 of 10 Old 07-11-2019, 10:07 PM Thread Starter
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post #10 of 10 Old 07-11-2019, 10:27 PM Thread Starter
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Well glad to see my image post actually went through. I was successfully able to use the high beam to trigger my relays but I'll be soldering a 6800uF capacitor in tomorrow to mitigate the flickering to the LED's

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