2018+ Softail Models Breakout

LP6 Relay question

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Old Mar 22, 2025 | 08:02 AM
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Toca
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Default LP6 Relay question

Hey all, I'm going to be installing an LP6 on my 2020 FXLRS, I will be making the harness myself, but I've got a question, I see that all the kits are using (2) 4 pole Bosch style relays, one for low beam and the other for high beam. My question is, couldn't you just use (1) 5 pole Bosch style relay? Low beam (2 of 6 LEDs) going to the normally closed 87A, and when high beam is triggered, 87A cuts off, and supplies power to 87 (4 of 6 LEDs), the relay is rated up to 30A or is this the way to have all 6 LEDs fire at the same time? Any input on this?
 
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Old Mar 24, 2025 | 09:02 AM
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Originally Posted by Toca
Hey all, I'm going to be installing an LP6 on my 2020 FXLRS, I will be making the harness myself, but I've got a question, I see that all the kits are using (2) 4 pole Bosch style relays, one for low beam and the other for high beam. My question is, couldn't you just use (1) 5 pole Bosch style relay? Low beam (2 of 6 LEDs) going to the normally closed 87A, and when high beam is triggered, 87A cuts off, and supplies power to 87 (4 of 6 LEDs), the relay is rated up to 30A or is this the way to have all 6 LEDs fire at the same time? Any input on this?
technically yes, but the BCM might throw a code for not seeing any current (even if its small) on the low beam or high beam circuit (depending on how you wired it)

also, all 6 fire on high beam even tho you have no power to the low beam. this is why you cant have both powered at once.
 

Last edited by evildiesel; Mar 24, 2025 at 09:03 AM.
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Old May 20, 2025 | 04:13 PM
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Thank you, got it hooked up, ended up using 2 x 5 pole bosch style relays.
 
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