I just installed a switch mounted on my dash that is ran inline with my juice's vp wire, i think it will be nice so I can leave it off for daily driving and turn it on when that pesky powerjoke pulls up to me at a lite, but it doesnt seem like its working properly, i think I have a good connection at the VP and I know the switch works and the wiring all looks good, any ideas or anyone else do this and have problems, I only used about 6' of wire so I dont think resistance is an issue, any ideas?

 

I think that was a bad idea. Im no expert on electronics but that wire to the pump isnt just a on off power wire. Its a signal wire id say, because its altering the signals to the timing and fueling. Resitance probly plays a big part in that wire i would think so. Hopefully someone with some expertise chimes in. But thats just my view of it.

 

one other thought maybe the wire either needs to be taped or untaped at start up and changing it on the fly wont work right. try shutting down the truck and restarting with the switch in either possition. i could be wrong but i dont think that little bit of wire would add enough resistance to matter.

 

The length of the wire tap wire needs to stay the same because altering resistance will cause it not to work properly. It really does play a big part as far as I know. And dieselrob is right, it's not just an on off. Not a good idea to do.

 

I tried restarting the truck because i thought it may need to go through a key cycle but that didnt work, anyways, i undid and am going to scrap the whole idea, but it would be nice if it would work.

 

It's not an Edge comp but my Edge EZ has been "switched" for a few years now and have had no problems. I have the Data Link wires switched and they turn the timing/fuel changes off and on.

When the EZ is "on", it works like normal, adding timing and fuel. When it's "off", it just acts like a boost fooler. I can turn it on and off at will at any speed and it never misses a beat.

Switching the "tap" wire shouldn't be an issue. Having the tap wire on a switch is the same thing as having the tap wire "tapped" or not. I'm thinking you have a connection issue somewhere in your wiring.

Jeff

 

I checked it all and its fine, so I just hooked it up regularly w/o going to the switch and it works good, i was just expecting to feel when I turn the switch under acc. on say...5x5, but I didnt feel it when I flipped it. But when I hard wired the tap w/o going to the switch it did feel good to have all the power back.

 

Well darn. I was going to try that when I tap mine. I guess I wont bother now.

 

Why dont you try and see if yours works. And Ill take another look at mine and see whats going on. I really dont see anything wrong with it, my only concern would be that if you use it alot you might somehow "confuse" the VP but other than that I dont see the problem, if some people think that resistance is and issue I might try and mount it up on a relay somehow and see if that makes any diff. If anyone has some insight as to whether or not this should or shouldnt work please chime in.

 

Depending on what type of signals are being transmitted through the wire a switch or other device can add noise or disrupt the actual signal. I don't know if that is the case here or not. Data signals can require very strict wiring perameters to work properly. This is a possible reason it did not work. If so maybe different switches act differently on the signal so some work and others don't. Using wire with the wrong impedance or capacitance can really mess things up also.

 

The TST products have an on/off switch as part of their assembly... I can turn my TST box off or on whenever I want...

I wouldn't see why it wouldn't be possible to add a switch in line with the tapping wire.

 

You should try and using a relay spliced into the edge harness, with no added wire, therefore the resistance will not be altered. Then just toggle the relay with your dash mounted switch. I think that might work.

 

Whats the point? You have 5 power settings available to you from the driver's seat via the Juice module. Drive around in setting 3 and when you want more tap the button and away you go. You paid extra for this feature why muck around?

 

x2............................

 

If the signal is a simple 5v or 12v signal that simply adds more power then the wire length will make little difference. If the signal to the VP is actually a varying signal that changes the VP performance based upon the situation on hand, then resistance in only one of the factors in addiing more wire, Inductance or capacitance is what you are worried about with the longer wire.

Additionally tHe longer wire can act like an antenna, allowing spurious emmissions to affect the signal.