valleyman
08-21-2005, 09:57 PM
I installed a kill switch today and it was much easier than I had imagined. I put the switch in the circuit that goes to the inertia fuel shutoff switch/fuel pump module located in the trunk. When the switch cuts the power there is no way to build fuel pressure: when you start it the car will run out the pressure stored in the system and then die, which takes about 30 seconds or so.
I interrupted the circuit in the driver side footwell; the hot wire to the fuel pressure module in the trunk passes through there on its way from the battery to the trunk. It's real easy to access, cut, splice in one, two, three or however many feet of wire you want depending on where you decide to hide the switch and then return the run to the other end of the cut wire in the OEM circuit. I used 14 gauge wire crimp-on connectors and a $2.99 rocker switch from Kragan. Works like a charm.
I pulled off the plastic trim panel in the driver's footwell that the brake release handle passes through to gain access to the wire I needed to get to. To get the panel off you have to pull the driver's door weatherstripping away from the door opening where the weatherstripping abuts the trim panel, which is no big deal because the weatherstripping snaps right back into place when you're done. There is an "arm" on the trim panel thet extends under the rocker panel. You can pull up the driver's door rocker panel if you want to but I didn't: I just reached in between the carpet and the rocker panel and flexed the arm of that trim panel out from under the rocker panel. Then you just pull straight back (parallel with the frame) on the trim panel and the two plastic fasteners under where the weaterstripping was will pop loose. They're reusable.
You'll see three big wire bundles with big plastic connectors attached to the body a couple of inches up from the carpeting: the top plastic connector is grey and the middle and bottom ones are black. The one you want is the middle connector (#210 if you have the wiring manual).
As you look at that middle connector from near the driver's seat, looking towards the front of the car, the wire you want is in the horizontal row second from the top, and is the not the wire farthest right in that row, but the one next to it, in other words , second from the right (pin #7 if your eyes are good enough to read the connector). It's red with a black stripe, just like it says in the manual. This is the wire that comes from the battery. Coming out of that connector Ford used a different color wire: the manual identifies it as red with a black stripe but on my early model '03 300A it is red with a blue stripe. This is the wire that runs all the way back to the fuel shutoff switch/fuel module in the trunk. It doesn't really matter which side of the connector you splice into, the battery wire side or the shutoff switch/fuel module wire side, switch the power off in either wire and the car ain't going very far.
I don't have a scanner but if anybody does that has the wiring manual, Component View 151-19 shows the footwell connectors. I don't want to post it on a public board but if anybody wants to PM me I'll tell you where I fit my switch in and where I routed the wires so they don't show.
Now I don't worry so much about the theft thing. :bandit:
I interrupted the circuit in the driver side footwell; the hot wire to the fuel pressure module in the trunk passes through there on its way from the battery to the trunk. It's real easy to access, cut, splice in one, two, three or however many feet of wire you want depending on where you decide to hide the switch and then return the run to the other end of the cut wire in the OEM circuit. I used 14 gauge wire crimp-on connectors and a $2.99 rocker switch from Kragan. Works like a charm.
I pulled off the plastic trim panel in the driver's footwell that the brake release handle passes through to gain access to the wire I needed to get to. To get the panel off you have to pull the driver's door weatherstripping away from the door opening where the weatherstripping abuts the trim panel, which is no big deal because the weatherstripping snaps right back into place when you're done. There is an "arm" on the trim panel thet extends under the rocker panel. You can pull up the driver's door rocker panel if you want to but I didn't: I just reached in between the carpet and the rocker panel and flexed the arm of that trim panel out from under the rocker panel. Then you just pull straight back (parallel with the frame) on the trim panel and the two plastic fasteners under where the weaterstripping was will pop loose. They're reusable.
You'll see three big wire bundles with big plastic connectors attached to the body a couple of inches up from the carpeting: the top plastic connector is grey and the middle and bottom ones are black. The one you want is the middle connector (#210 if you have the wiring manual).
As you look at that middle connector from near the driver's seat, looking towards the front of the car, the wire you want is in the horizontal row second from the top, and is the not the wire farthest right in that row, but the one next to it, in other words , second from the right (pin #7 if your eyes are good enough to read the connector). It's red with a black stripe, just like it says in the manual. This is the wire that comes from the battery. Coming out of that connector Ford used a different color wire: the manual identifies it as red with a black stripe but on my early model '03 300A it is red with a blue stripe. This is the wire that runs all the way back to the fuel shutoff switch/fuel module in the trunk. It doesn't really matter which side of the connector you splice into, the battery wire side or the shutoff switch/fuel module wire side, switch the power off in either wire and the car ain't going very far.
I don't have a scanner but if anybody does that has the wiring manual, Component View 151-19 shows the footwell connectors. I don't want to post it on a public board but if anybody wants to PM me I'll tell you where I fit my switch in and where I routed the wires so they don't show.
Now I don't worry so much about the theft thing. :bandit: