The LED bulbs just replace the stock ones. Be sure to replace the stock T/S relay with an electronic one. 
https://www.ebay.com/itm/2-Pin-Electronic-LED-Flasher-Relay-FIX-Motorcycle-Turn-Signal-Bulbs-Hyper-Flash/351794336313?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
The headlight is the most difficult to fit, I used an Emgo headlight. More room for wire connections. I painted it orange to match the bike.
https://www.economycycle.com/shop/yamaha-rd250350400r5ds6ds7-parts/headlight-and-bucket-assembly-in-gloss-black-or-chrome/
This is the headlight LED
https://www.ebay.com/itm/H4-HB2-9003-LED-COB-Motorcycle-Bike-Hi-Lo-Beam-Headlight-Lamp-Bulb-6500K-12000LM/273591830914?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
Turn signal LED's
https://www.amazon.com/gp/product/B00ZZO0HWW/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Gauge LED's
https://www.amazon.com/gp/product/B00KW3RKT4/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
I kept a regular #1157 bulb for the tail/brake light.
John
				
			https://www.ebay.com/itm/2-Pin-Electronic-LED-Flasher-Relay-FIX-Motorcycle-Turn-Signal-Bulbs-Hyper-Flash/351794336313?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
The headlight is the most difficult to fit, I used an Emgo headlight. More room for wire connections. I painted it orange to match the bike.
https://www.economycycle.com/shop/yamaha-rd250350400r5ds6ds7-parts/headlight-and-bucket-assembly-in-gloss-black-or-chrome/
This is the headlight LED
https://www.ebay.com/itm/H4-HB2-9003-LED-COB-Motorcycle-Bike-Hi-Lo-Beam-Headlight-Lamp-Bulb-6500K-12000LM/273591830914?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
Turn signal LED's
https://www.amazon.com/gp/product/B00ZZO0HWW/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Gauge LED's
https://www.amazon.com/gp/product/B00KW3RKT4/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
I kept a regular #1157 bulb for the tail/brake light.
John

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