Upfitter Switch as Ignition Switch/Relay??
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Upfitter Switch as Ignition Switch/Relay??
Has anyone ever tried to wire up one of the upfitter switches as an ignition switch/relay.? I have a 2006 F-250 - I would like to use one of the switches as an ignition 'kill switch'. A while back my truck was stolen, I have since installed an alarm system and looked at a system by Ravelco (anti-theft key pin system, supposedly the best out there) but before I went and spent the $$ for the system I figured I would see if I could create a lockout switch for my ignition.
I assumed I would be able to run one of the ignition relay wires through one of the upfitter switches. When I park my truck set all the switches to off so in order to start you would have to turn on that switch. I know not theft-proof, but hopefully it would fool the would-be thief long enough for alarm to go off, wake me up and chamber a round in my .45
Is this is possible?? Thanks for the feedback!!
I assumed I would be able to run one of the ignition relay wires through one of the upfitter switches. When I park my truck set all the switches to off so in order to start you would have to turn on that switch. I know not theft-proof, but hopefully it would fool the would-be thief long enough for alarm to go off, wake me up and chamber a round in my .45
Is this is possible?? Thanks for the feedback!!
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Schematic may help.?
Since I can't draw a schematic on here, I'll do my best to illustrate, and please pardon my lack of technical knowledge!
In from starter relay >> key/ignition >> starter coil. Turn key, starts truck.
In from starter relay >> upfitter switch >> key/ignition >> starter coil. Turn key with switch off = nothing. Turn key with upfitter switch in 'on' position, starts truck.
Essentially trying to create an in-line start switch using one of the upfitters. Maybe just makes more sense to put a little switch in-line under the dash/steering column somewhere as a theft deterrent.?
In from starter relay >> key/ignition >> starter coil. Turn key, starts truck.
In from starter relay >> upfitter switch >> key/ignition >> starter coil. Turn key with switch off = nothing. Turn key with upfitter switch in 'on' position, starts truck.
Essentially trying to create an in-line start switch using one of the upfitters. Maybe just makes more sense to put a little switch in-line under the dash/steering column somewhere as a theft deterrent.?
Posting Guru
Joined: Oct 2009
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From: AZ
well power or not they are still just switches so it is just making or braking a contact use it that way and not supplying power to the circuit would work .. but a hidden toggle is better imho
EDIT I was typing while you were posting .. just to clarify
EDIT I was typing while you were posting .. just to clarify
Cargo Master
Joined: Jun 2008
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From: Stillwater, OK
the upfitter switches control relays, power doesn't run through them.
if your key is in START, the upfitter loses power, and the relay will open.
This means that if you connect your starter solenoid circuit through the upfitter relay, you will have no power to the starter solenoid when the key is in the START position.
to do this, you will have to do some major rewiring of the built in circuitry.
if your key is in START, the upfitter loses power, and the relay will open.
This means that if you connect your starter solenoid circuit through the upfitter relay, you will have no power to the starter solenoid when the key is in the START position.
to do this, you will have to do some major rewiring of the built in circuitry.
Posting Guru
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From: AZ
I wouldn't think it would be that major to intercept the switch input output and bypass the fuse box
but it really isn't worth the effort for this application IMHO plus you loose a good powered switch and fuse
however the OP's idea on how to do it after it is powered up would work I ,, but I would just go hidden toggle or keyed switch myself
just don't kill the fuel pump and still let it crank
but it really isn't worth the effort for this application IMHO plus you loose a good powered switch and fuse
however the OP's idea on how to do it after it is powered up would work I ,, but I would just go hidden toggle or keyed switch myself
just don't kill the fuel pump and still let it crank
Cargo Master
Joined: Jun 2008
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From: Stillwater, OK
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Posting Guru
Joined: Oct 2009
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From: AZ
Well that explains your position
and disproves mine ! interesting that their is a PCM in the remote fuse box ?
thanks I figured they would just be normal spst or dpdt toggles
and disproves mine ! interesting that their is a PCM in the remote fuse box ?
thanks I figured they would just be normal spst or dpdt toggles
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Cargo Master
Joined: Jun 2008
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From: Stillwater, OK
Same with the windshield wipers, the Air Conditioner, Cruise Control...everything. There isn't a single electrical component that the driver actually controls anymore. Everything is controlled by the PCM.
Posting Guru
Joined: Oct 2009
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From: AZ
The switch simply grounds a logical I/O pin on the PCM. It is not designed for any load.
I thought you were trying to say the uppfiterswitches were tied to the pcm
and since it is a standalone system I was curious about your pcm comment
but then it dawned on me maybe the o8 is different
mine has it's own fuse and relay box under the glove box
Elder User
Joined: Jan 2002
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It is really simple.
All you have to do to disable the starter, or anything else, is to interupt the wire that triggers the relay or provides power directly to the device. It doesn't matter if the signal comes from the fuse box, the battery, or the PCM. The trick is to hide/disguise your wire so that it is not easily detectable.
Lead Driver
Joined: Sep 2007
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From: Scio, OR
There is only the one PCM... It is the center for all of the logic on these pickups. When you turn the headlight switch, it sends a signal to a certain input pin on the PCM. That signal tells the PCM which position the switch is in, and which lights to turn on. The PCM uses an output pin to energize a relay and turn the desired lights on.
Same with the windshield wipers, the Air Conditioner, Cruise Control...everything. There isn't a single electrical component that the driver actually controls anymore. Everything is controlled by the PCM.
Same with the windshield wipers, the Air Conditioner, Cruise Control...everything. There isn't a single electrical component that the driver actually controls anymore. Everything is controlled by the PCM.
Other modules do a lot of other things. Depending on the year, the GEM, HEC, 4WD Control, ABS, VSM, SJB, etc, etc. They're all connected by one or more data busses, so they work together. But they are separate modules.
These are the wiring pinouts and circuit descriptions for the three connectors to the PCM. They'll give you a pretty good idea of what it does and doesn't do.