I have had several threads on here and in each and every one of them I have never stated or Implied that I am a Certified Small Engine Mechanic or have run a business repairing mowers. So I do not come on here and dismiss advice I get from others like they don't know anything and are stupid. As I do have experience working on vehicle engines, and small engines with electronics experience on reading schematics I feel I can say I am not a beginner. The way you came across in the post before this one was Aragant and Insulting. You could have easily said I want to help but i am having trouble understanding what you are having trouble with. So let me ask these questions so that I can better understand what you are having trouble with understanding my answers. I bought this mower used from a friend and he said all it needed was a new key switch. I have replaced all the parts on here using Husqvarna part numbers. He had been crossing the solenoid to start the motor. The new switch didn't work to start the motor. That's when I noticed the wiring problems. I checked all the Safety switches for continuity and found the Brake switch was bad but found one of the control arms Safety switches was cracked pretty bad at the prong that touches the control arm. Replaced it as well. Then I took the wiring harness off and did a continuity test on every wire from the starter switch to the PTO switch and from there to the rest of the length of all the wires. Everything good, no breaks in the wires anywhere. Replaced the solenoid with a new 3 post one per parts lookup. Motor stars and runs fine now even when I disengage the parking braking brake but as soon as as I move one of the control arms inward the engine tries to shut off. As someone that is married to a woman that English is not her native or first language I understand how that is. when you ask someone that, that is on an English speaking website the way you did it comes across as very rude an offensive. My wife speaks and reads and writes English fluently but has a little accent from her native language, she still gets asked if she can speak English good because of it. And she is a college graduate. So this is the Model number and the parts I have replaced on it just to get it to start with a key. I appreciate all the advice from the people on here I get because I know I can never know everything about everything. Thanks. MODEL- 967003801-00 (2012-02) Ignition switch-539107541/ 532175566 Brake switch-539113792 Interlock switch-532109553/ 539101080 Solenoid-539101714 As I appreciate everyone's help I hope this information helps you understand what i am explaining on here as I know you nor anyone else on here can see the actual mower I am talking about. If you decide not to answer then have a good day and continued success in helping others.1) Yes I read your post and wrote a reasonably comprehensive answer to your no start problem
2) the wiring diagram I found does not show a B & W wire either but does show a 2 terminal seat switch
3) Husqvarna is known for making changes to their wiring , sending out dealers updates but not changing the printed owners manual
3) Husqvarna is the only company that fits the and tamper switches & I have found them on mowers and not shown in the wiring diagrams
5) Yes I have read the manuals, done the trade courses got the certificates and run a repair business
6) here are a lot of people who come here where English is their 2nd 3rd 4th or 5 th language so they may or may not understand what is being aid to them
7) you are there with the mower I am around 10,000 miles away so it is a bit hard to see your mower from here
8) yes I looked at the wiring diagrams in fact I checked 11 of them looking for that B & W wire . however I can read & understand them it would appear that you have difficulties or you would have seen that the lap bar switches & seat switch & brake switches & PTO switch are all connected to one another via the brown wire which is connected to the magneto kill wire ( although that is not shown past the engine pig tail )
9) you got the mower second hand with faulty wiring & replaced the key switch , without trying to do any diagnosis, we have no idea if you bought the correct switch or not as you did not post the numbers nor do we know if any or all of the switches fitted are right or wrong as the switches come both NO & NC and on more than one occasion I have found an owners bought the cheapest of two switches which of course was wrong .
However as I do have manners and do not impose where I am not wanted then I shall wish you all the very best & happy mowing