Manual Transmission Compatibility

[RonD]

No, 12 to 24 gauge is fine, its only 1-2volt AC

I would test the VSS plug in wires, as you said 1 should show as Ground and the other as not a ground
Same for the grey/black wire you are splicing into, it should not show as a ground, test key off and key on

1995 to 1997 VSS wiring seen here: https://ww2-secure.justanswer.com/uploads/FO/fordguy4u/2013-05-22_172049_a1.jpg

So you can tap into, NOT CUT, any grey/black wire and it will feed all the devices with the GPS speed signal

 

[Cheburashka]

No, 12 to 24 gauge is fine, its only 1-2volt AC

I would test the VSS plug in wires, as you said 1 should show as Ground and the other as not a ground
Same for the grey/black wire you are splicing into, it should not show as a ground, test key off and key on

1995 to 1997 VSS wiring seen here: https://ww2-secure.justanswer.com/uploads/FO/fordguy4u/2013-05-22_172049_a1.jpg

So you can tap into, NOT CUT, any grey/black wire and it will feed all the devices with the GPS speed signal

I'm wondering if the problem is that I cut it instead of tapping it.

It checked with a multimeter and it is not grounded.

It does appear linked to the 12V + side of the battery. Putting the multimeter in DC mode shows me a reading of 12V when I measure across from the positive battery terminal to the signal wire.

 

[Cheburashka]

Alright, I measured the AC volts when driving. I am getting ~6V AC that change with speed. Was expecting 1-2V.

Any ideas?

 

[RonD]

That should be OK, the 6v, its not the voltage that is used its the AC Volt Sine Wave pulse that's used

You can cut the gray/black wire to splice in the GPS wire just connect all 3 wires back together

 

[Cheburashka]

Right now its connected right at the VSS plug so it should be fine. This is mind-boggling!

 

[Cheburashka]

Spliced at the cruise control side and still no go. Unsure what to do at this point.

 

[RonD]

Sorry I got nothing else to add

Have you found any posts about this model GPS and its use on a Ford?

 

[Cheburashka]

I have not but should be no reason why it wouldn't work.

At this point I am going to give up and just return it, and get the Dakota Digital SGI-100BT instead. At least that way I know it's working properly since it has some diagnostics on it.

 

[RonD]

And I assume your speedo was working before the transmission swap?

You can test the wiring by plugging the VSS back in and use a drill to spin the gear, should get speedo movement

Can't remember if you turn it clockwise or counter clockwise, doesn't hurt anything to turn it the wrong way, same as backing up in Reverse would do, speedo doesn't move though, lol.
I think 800rpm drill will get to 40MPH on speedo

I always wonder why "they" never enabled speed in Reverse, I think we should have that option

 

[Cheburashka]

Good idea, will rewire the VSS and see what happens. Thanks!

 

[Cheburashka]

Just did the drill test and speedo works fine.

Now in really starting to suspect the Summit unit is just not working.

 

[RonD]

Yes, pretty easy to hook it up to VSS wire, so it may be bad or not compatible

 

[Cheburashka]

Im also suspecting an issue with ground. I know a bad ground would cause similar behavior.

 

[Cheburashka]

So, I got the Dakota Digital and it worked right away.

I got the SGI-100BT. The nice thing about it is it has an app that lets you configure and monitor it through Bluetooth, so no need to mount it inside to calibrate.

Mounted it under the hood by the power distribution box.

Thanks a lot for all the help, I've learned a lot!

The summit racing unit is going back to summit racing. No idea why it didn't work.

 

[RonD]

Good work

Thanks for posting the FIX

Never used that one but just read about it, looks to be worth the extra $10-$15 for sure, and now WE KNOW it works in a Ranger, lol, sweet