4WD Lo Range Light DIY/Reverse 7 Pin Mod? (2 Viewers)

[tyfj80]

I recently installed an old Toyota inclinometer in my 2000 LX470 to fill the empty space below my single DIN head unit. I know our trucks don't have a light to indicate 4 Lo, but does anyone know of a 12v circuit that is energized when 4 Lo is selected? The inclinometer has a "4WD" light that I want to light up when I shift into 4 lo but I need 12v to do it. I already have the other side attached to the illumination circuit for my radio. Is there a spare pin somewhere that would have been used for a rear locker, or something related to the CDL switch I could use? Thoughts and suggestions would be welcomed.

 

[Dirt J]

Per p.176-177 of EWD, check the black wire with blue stripe that goes from Low Range switch to CDL relay.

 

[tyfj80]

View attachment 3457327

Per p.176-177 of EWD, check the black wire with blue stripe that goes from Low Range switch to CDL relay.

Very nice, thank you! I'll give it a try this weekend and let you know if I can figure it out.

 

[Dirt J]

Good deal. Looks like that wire leaves the switch in the tcase and terminates at the "transmission control relay". Check this post.

 

[tyfj80]

Good deal. Looks like that wire leaves the switch in the tcase and terminates at the "transmission control relay". Check this post.

Closing the loop on this, I found the black/blue wire where it went into the ECU. It's in the second harness from the bottom. It activates with 12V when shifted into low as you described. Now I have an indicator light when I'm in 4Lo. Unfortunately I can't post a vid here but it works perfectly. THanks for all of your help. One question, where can I buy a copy of the EWD for future reference?

 

[Dirt J]

You are welcome! Glad it worked out.