SPDT Relays

Sorry it took so long to get this one up. I filmed part of this a while ago. Enjoy.

[@jimhiscott2918]

I lived in Chandler for one summer. I moved and got the hell out immediately after that torture test....

[@Ijeyrapboy]

Great video man, I am actually going to tackle this project in my s10 soon adding power locks with my alarm system using spdt relays. This video just added to the helpfull info that i needed to know!

[@BigSarnt]

This was great and very educational. thank you

[@blown72olds]

@99MLSMediaGroup Barnes & Noble, Jegs, Summit Racing, Eckler, etc. or you can buy autographed copies directly from me.

[@Marzec309]

One thing you didn't mention, with this dual SPDT circuit its completely safe to energize both relays at the same time. As if some one presses a lock button while some one else is pressing the unlock button. The is because both sides of the solenoid become hot and thus no shorts a cure. :)

[@countclarke9552]

very good work man

[@RatzNezt]

I have an existing car alarm installed. My alarm has 1 siren, which is dead from age. I ordered 2 sirens and they should be here soon. I just have a couple questions: My alarm only has 1 siren output, so can I use an SPDT relay to install the 2 sirens? If so, would it make more sense to connect the relay directly to the battery with an inline fuse or should I try to connect it to the factory fuses under the driver's side of the dash? Lastly, there are 2 wires leading from the alarm output and connected to the dead siren; + and -. I guess the + wire would go to the relay, but what about that - output wire that's connected to the siren? Thanks for any help.

[@CEAutoElectricSupply]

Most alarms can easily drive two sirens without need for any relay. Should you use one, you need to verify which one of the siren leads is the "switched" lead and which one is not and this will vary by brand. Some alarm siren outputs are positive with the other side of the siren connected to ground and other alarms use a negative output with the other side of the siren connected to +12V.

[@RatzNezt]

Thanks for the reply.

[@M6NESHo0oXBOX360]

good work man :)

[@99MLSMediaGroup]

Where Can i buy the books?