any of you guys ever use the dei 555f?

[Ranger SVO]

While I have not used that brand of module, I have had extremely good luck with the learning bypass modules (working from memory, I'm not at the shop). The Ford has four wires coming of the key cylinder, one is power, ground and two data wires. Ground and the two data wires are spliced into while the power is cut. The Ford bypass module has an in and an out power wire. These wires cannot be reversed. During remote start the module take over (obviously), and reversing the wires will prevent the car from starting.

A mistake I made just recently. DO NOT assume that the red or black coming from the key cylinder is power and ground, I can assure you it is not.

The bypass module I prefer to use for Ford is an Omega piece, It works well and I personally have used 20-30 with no problems (except one or two installer screw ups)

[smoker]

ever do a jeep liberty? better have your resistor selection stocked up........took about five relays and a handfull of different resistors to get it right.....

[Ranger SVO]

No, but I've done a Jeep Grand Charokee that was a nightmare.

[smoker]

do they need resistors too? i have done a grand cherokee but the easiest by far is the dakota with no factory security system, infinitis are not a lot of fun at all either......you must be in damn good shape dude, to be 46 and turn upside down under a dash is pretty good, i have a hell of a lot harder time at 34 than i did at 24......

[Ranger SVO]

Transponder in the key. No problem to program if it has only the two original keys programed to it. If a third key has been programmed (the problem I had) it needs to be reprogrammed for two and then the bypass can be programmed as the third key.

Gray key = transponder
Black key = no problem

The Grand Cherokee I did was an 04 model ( I still have bad dreams about it)