Vatts by-pass

[BLRobertson]

I was wondering if anyone knew what general range the resistor in the ignition key is supposed to read.It's been a while since I've used my multimeter to actually measure resistance and the readings I'm getting are confusing.

[Jrs3800]

There are 15 different resistances used in the keys... so each car is a bit different..

[HotZ28]

VATS # (K)OHMS (Set your meter to the 20k ohm setting)

1———— 0.402
2———— 0.523
3———— 0.681
4————-0.887
5————-1.130
6————-1.470
7————-1.870
8————-2.370
9————-3.010
10————3.740
11————4.750
12————6.040
13————7.500
14————9.530
15————11.801

[BLRobertson]

Thank you, this is exactly what I was looking for. I'm reading .33 at the 20k setting with my meter. When I connect the 2 leads it has a reading of .20 with a new battery installed. I'm thinking I might have to take the key to work and use one of the meters there to see if I get something closer to one of the values you've listed here. So if it turns out I've got the .523 I'll need a 523 ohm resister or am I moving the decimal too much?

[HotZ28]

You may have a .402 resistor, you need to verify. Usually, a resistor with + or - 10% of the reading will work fine. So .400 should work; (if your meter is correct.)

[wafrederick]

Kent Moore does make the tool to see what the code for the key is and much easier this way.It is not cheap and you can find it on Ebay.

[BLRobertson]

I used a meter at work and came up with .521 on the key. One of the avionics techs dabbles with Ham radios and built up a gang of resistors that measured .522 so that should get me close enough. This forum is a great resource for all us guys who either don't trust or can't afford others working on our vehicles. Thanks again, I'm sure I'll be back.