Amp research

[Toytaco11]

Anyone know which wires or have the wiring diagram that I need to tap into to make my amp research steps work without using the OBD2 connector

I got a 2021 At4 with 3.0l crew cab 4x4

 

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[RugbyRef]

I installed a set on my 2017 GMC 3500 HD a long while back and hardwired them in, but the wiring in the newer trucks is very different. Although you mentioned that would be your preferred method in your 2021, I know Amp Research offers a "Pass-through Harness" that plugs into the OBDII connection and has a pigtail with a "New Vehicle Port" on it that allows for use of the OBDII connector. AMP Research Pass-through Harness.

Wish I knew about the harness back in'17...might have saved me from the frustration and headaches! Good luck!

 

[Duramaximus]

You may have better luck reaching out to AMP directly.

 

[Toytaco11]

I ended up ordering the pass thru and see how that works out… these new trucks are way to sophisticated now thanks for your help appreciate it