Elvis Nocita wrote: > what kind of protection diodes are you talking about ? to cut the spikes of > the selenoides in the door or for the normaly used diodes parallel to the > relay ? Please see the article at: http://www.dmcnews.com/Techsection/doorlocks.htm Specifically the update from 10/1/01 > By the way, this fan fail module - can you tell me what is the problem with > that one ? Why would it fail ? Winter is near and may be I'll find some time > to replace this thing, too. Consider the current the fans draw. Now consider passing this current through a PCB track a couple of millimetres wide. Now connect the brass (!) module "legs" to these tracks by soldering a tip barely a millimetre across. Imagine what happenns when you unplug and replace the module a couple of times. Dry joints anyone?! I've replaced both the fan relay and the fan fail module with a pair of relays with integrated 15A fuses, mounted in trailing sockets with the wires crimped so each fan is powered from one relay. Martin #1458 & #4426 - picking her up this weekend!