I was given one of those (probably eBay/Amazon) RFID Push to Start kits. Everything seems to look of decent quality, nice heavy gauge wiring, etc.
I have a "spare" car i'm installing it in, just my fun, random project type car so its a perfect guinea pig. Its a 2005 Mercury Grand Marquis GS. (I have appropriate wiring diagrams for it)
Im pretty handy with wiring, (probably not compared to most of you on here) the unit has a handful of wires. All are self explanatory (acc, ignition 1, ignition 2, brake switch, starter, 12v constant, ground, etc)
My issue: the car has 3 ignition wires. PTT unit has 2. So someone might think to just tie two together, and connect it to one of the ignition wires on the unit. I didn't want to try that, and risk burning something up. I decided to use a relay. Upon testing after I wired it all up, its close to being right, but the relay is screwing things up.
Heres what happens: (Its freezing outside, and dark, so i'm not worried about the ignition at the moment, so right now, its gonna be turning the key on to unlock the shift mechanism, and to make the PATS system happy)
(This scenario is just having the key near the ignition which is good enough for the PATS system)
Press the PTT button once, accessories come on as they should. Radio, windows, etc
Press it again, it mimics the key being turned to the "on" position. Gauges come to life, HVAC controls work, etc
Put my foot on the brake and press the button, the starter (for lack of a better term) clicks once, and doesn't start. (Not a PATS issue) (If I press the brake pedal from it being off, it'll turn everything on and then try to start, but do the same random thud/click as if the starter wanted to engage but didn't)
Then, pressing the brake pedal, and pushing the button again turns the system off. Some of my idiot lights on the gauges stay on, as well as something under the dash thats barely audible. IF I unplug that relay, it all turns off, and things are normal. If I put the key in the ignition, and turn it to "ON" and then use the PTT to start it, it works flawlessly. I can take the key out and everything is working. However, when I turn it off, I once again have to pull that relay. The relay is working as it should, but it seems like its staying on when it should turn off, I think? If I start it with JUST the key, I get the same problem with the idiot lights staying on and have to pull the relay
Lets use random wires for example.
Ignition 1: blue
Ignition 2: red
Ignition 3: green
PTT Ignition 1 output: orange
PTT Ignition 2 output: yellow
I have:
Output 1 orange, connected to ignition 1 blue
Output 2 yellow, connected to relay input trigger AND ignition 2 red
Relay output connected to ignition 3 green
Is this not the way it should have been done? Can I not wire it up in a way to work with my car? Should I just try connecting both ignition wires to ignition 2 output on the PTT?
2006 Explorer XLT
2009 Ford Fusion SEL