tps wiring

redders33 · Post by **redders33** » Sun Dec 13, 2009 10:56 am

Hello all, I am running a 2.0 zetec on R1 carbs and tps with a megajolt from Chester Sports cars....I have lost my info and want to conect the tps up I know which is the +,- and mover on the tps unit but am not sure which is which of the three wires coming fron the megajolt unit?? I have already wrecked 1 tps through wiring it wrong so want to be sure this time cheers Nick

NITROPIXIE · Post by **NITROPIXIE** » Sun Dec 13, 2009 12:26 pm

Hi Nick and welcome to the forum. I believe the page you require is this

http://www.autosportlabs.net/MJLJ_V4_ve ... _operation

Hope this helps

Funky Diver · Post by **Funky Diver** » Wed Jun 09, 2010 11:12 am

So as not to replicate any posts. Does anyone know the wiring key on the R1 carb throttle position sensor? It's already installed so would be a bit daft to not use it really

Post by **brentp** » Wed Jun 09, 2010 2:20 pm

If it has 3 terminals then it's a straightforward process of using a ohm-volt meter to find out which is the center leg (wiper) of the potentiometer and the respective ground / VREF connections. I think it's been posted here in the forums before on how to determine this; essentially you connect the meter to two connections and observe which way the resistance changes as throttle changes. If you find two terminals that don't change as throttle changes then you've found the two outer legs of the potentiometer. A simple process of elimination.

You want:

+5v
center leg
GND

with the resistance *reducing* between center leg and +5v as throttle opens.

Funky Diver · Post by **Funky Diver** » Wed Jun 09, 2010 2:39 pm

Thanks Brent... *digs out meter and carbs*

Gives me summat to do in readiness for my kit arriving (not that I'm in ANY position to do anything with it all... car's in bits, literally!)

Following has been added later :

And all done

For reference

Kawazaki Ninja ZZR Keihin Carbs wiring colour is +5 = Yellow, Gnd = Black, TPS Input = Blue