Door lock 2003 PT cruiser

You need the 451m. (or 2 relays) Because 200ma is not enough, you need a full amperage. Try the 451m again. Purp (fused) wire- ground GREEN/ black- lock output through proper resistor Blue/Black- unlock output through proper resistor http://64.85.6.129/extrainfo/diagrams/4623_PT-CRUISER_CHRYSLER%20PT%20CRUISER%201%20WIRE%20JBS%20UNITS.pdf NOTE *1 This vehicle uses a 1-Wire Door Locking System, LOCK requires a (-)Negative thru a 3000 Ohm Resistor and UNLOCK, requires a (-)Negative thru a 7200 Ohm Resistor, and requires a DOUBLE PULSE to UNLOCK. Some unit also require 2 extra relays Part #775, to connect, See DIAGRAMNote: You Always Dont Get What You Pay For.

So nothing on the 451 is connected but the purple?  no power?

captainzab wrote: Try the 451m again. Purp (fused) wire- ground GREEN/ black- lock output through proper resistor Blue/Black- unlock output through proper resistor

plug the 3pin harness into the alarm brain. The other wires on the 451m. u only need 3 wires purp (input) GREEN/ black lock output blue/black unlock output Cut and tape the brown and white wire. (not used)Note: You Always Dont Get What You Pay For.

i have always had good luck with using the standard voltage out of the brain but i lower the resistance of the resistors. the module has a small amount of resistance.  and i never use diodes except on the 06 hyundia tiberon with their goofy set up.