(diy) switchback turn signal with factory side markers

Hello I know allot of people done this before I search allot too but didnt find anyone that done this and was able to make the side markers blink at the same time with the turn signal when the parking light are on. From 1 to 10 this is a 4 on dificulty.

This wiring is specific for 07/08 tl s
same steps for 04 to 06 but may have different wire color

Parts
2 relays
2 diodes
18 guage wire

1-First remove the cover of the steering wheel
2-locate this connector behind on the wiper controls unit

3-splice this two wires they are the left and right turn signal this colors are for 07/08 tl s .

4- pass this wire that you just splice to the engine compartment .

5-now remove the side marker from the fender and cut the positives wire black/red .

6- now you have two wire one from the side marker and one from the car.


7- Now get your relay and make the flowing connection
connect the car side wire to connector #87a on the relay
Connect the side marker side wire to connector 30 on the relay


8-now connect the two wire from the turn signal sitch to connector # 86 on the relay make shure to use a diode.


9- connect conector # 85 To the positive side of the battery.

10-connect conector #87 to the torn signal wire at the headligh


11-now that all the connection are done it will look like this.


This is how it look

Acura tl type s side marker turn signal: " title="Acura tl type s side marker turn signal - YouTube" target="_blank">Acura tl type s side marker turn signal - YouTube