[2015 Z Force 800 53/Trail EPS]

Sense I was in there tracing things out in preparation for a different switch I made this to help me. Figured it might be useful for someone in the future.

[If you do this please know that it is a safety feature not to have full RPM in reverse and in diff-loc. It is also hard on the front diff to be turning at speed so remember to shut it off when you are out of the situation that required it. There is a warning ICON on the dash to help you remember.]

I replaced the Override switch which was a momentary type with a regular ON-OFF switch so I didn't need to hold it down enabling me to keep both hands on the wheel. I was hoping to use the CFM cover on this switch but it seems there is a slight difference that won't let me...easily that is.

If you do this please know that it is a safety feature not to have full RPM in reverse and in diff-loc. It is also hard on the front diff to be turning at speed so remember to shut it off when you are out of the situation that required it. There is a warning ICON on the dash to help you remember.


Also, I elected not to use the ON position LED as it would use power from the control circuit which is not 12 volts but 10.4 volts that the ECU expect to be grounded or not. Adding a load to it may not be received well by the ECU and besides, the LED would not be full brightness anyway. I did use the regular dash LED like the OE switch had though.

This is the switch I used because it had a white LED:

https://www.amazon.com/gp/product/B00NZU40D0/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc


This is how I wired it:




And a final pic:




UPDATE 9/17/16:

I was able to put the OE switch cover onto the new switch body after all. I must have had it miss-aligned when out of the panel. Now it looks like the original switch, just stays on when clicked.


UPDATE 9/28/16

Had the chance to test this today. Works great. One notation though, it does not effect the limiter for reverse. Only the Diff-lock. Still, it was nice to just switch it on and go. It made climbing long steep sandy hills a breeze.

[If you do this please know that it is a safety feature not to have full RPM in reverse and in diff-loc. It is also hard on the front diff to be turning at speed so remember to shut it off when you are out of the situation that required it. There is a warning ICON on the dash to help you remember.]

I replaced the Override switch which was a momentary type with a regular ON-OFF switch so I didn't need to hold it down enabling me to keep both hands on the wheel. I was hoping to use the CFM cover on this switch but it seems there is a slight difference that won't let me...easily that is.

If you do this please know that it is a safety feature not to have full RPM in reverse and in diff-loc. It is also hard on the front diff to be turning at speed so remember to shut it off when you are out of the situation that required it. There is a warning ICON on the dash to help you remember.


Also, I elected not to use the ON position LED as it would use power from the control circuit which is not 12 volts but 10.4 volts that the ECU expect to be grounded or not. Adding a load to it may not be received well by the ECU and besides, the LED would not be full brightness anyway. I did use the regular dash LED like the OE switch had though.

This is the switch I used because it had a white LED:

https://www.amazon.com/gp/product/B00NZU40D0/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc

And a pic:

Awesome and I love the switch so now if you have it on you will get full speed in R ?

[2015 Z Force 800 53/Trail EPS]

Awesome and I love the switch so now if you have it on you will get full speed in R ?

Yep...and in 4wd with the diff locked.

I think I will end up switching out that switch also on mine.  I dont see it being something that is a huge problem but more of a inconvienence when i do need it and I have to hold a button down to get out of trouble.  Not real high up on my list of things to do...but one of those things that I will likely order the switch and when im in there next time doing something else I will take care of that also.  Thanks for the write up NMKawi!

Awesome and I love the switch so now if you have it on you will get full speed in R ?

Yep...and in 4wd with the diff locked.

I'm a little confused on the reverse thing.
Originally you made a note in bolt letters that said
"One notation though, it does not effect the limiter for reverse."
Then someone asked if you have the switch on will you get full speed in reverse?
Then you said yes. I'm confused

[2015 Z Force 800 53/Trail EPS]

Awesome and I love the switch so now if you have it on you will get full speed in R ?

Yep...and in 4wd with the diff locked.

I'm a little confused on the reverse thing.
Originally you made a note in bolt letters that said
"One notation though, it does not effect the limiter for reverse."
Then someone asked if you have the switch on will you get full speed in reverse?
Then you said yes. I'm confused

Must be a timing issue but it has no effect on my 2015 Z8. Only the diff-loc limiter.

ok thanks for clarifying

[2015 Z Force 800 53/Trail EPS]

ok thanks for clarifying

Yeah I first thought they were together in the system but apparently they are not. If I ever need the reverse limiter overridden...I will find it and post how. For now it hasn't been an issue.