 Diode Isolation, On Keyless Entry/Alarm |
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 Oct 2, 2005 - 2:02 PM
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 Enthusiast  Joined May 6, '05 From PA Currently Offline Reputation: 4 (100%)  |
I'm installing my old Bulldog Keyless entry on my sister's 94 ST, and I asked went to RadioShack and told them I needed 2 12V 1AMP Diodes (that's what I used on my car, and re-used them when I bought an alarm) they didn't have 1AMP in 12V, so I got the biggest they had, 21mA which is a lot smaller than 1AMP. I really don't feel like going out and hunting down 1AMP diodes.
My guess is it will render one of those "Don't lock your keys in your car" features useless. If I absolutely have to, I'll get 1AMPs but it's not a big deal to me, lol. What will happen if I use the smaller ones? -------------------- |
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Oct 2, 2005 - 3:29 PM
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Enthusiast Joined Dec 2, '03 From Virginia Currently Offline Reputation: 0 (0%) |
i'm confused what you are trying to do... if you use a 21mA diode where a 1A is called for you will most likly burn the diode up. if you are just trying to isolate a circuit, meaning current will only flow in one direction then you just need a PIV rating of higher then 12V and a current rating higher then what will flow through that wire. just go try a 1n4001 (PIV: 50V, Imax: 1A) they cost about 10 cents.
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Oct 2, 2005 - 4:33 PM
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 Administrator Joined Aug 23, '02 From Seattle, WA Currently Offline Reputation: 14 (100%) |
What are you trying to diode-isolate?
-------------------- New Toyota project coming soon...
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Oct 2, 2005 - 10:48 PM
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 Enthusiast Joined Oct 1, '02 From Minnesota, USA Currently Offline Reputation: 0 (0%) |
The door triggers aren't separate so there is nothing to diode-isolate on the Celica. A lot of GMs the door triggers are separate so this is necessary but in our case it isn't.
-------------------- 95 Toyota Celica GT
Dead for now --> Soon to have a 3S-GTE 02 WRX --> This is for speed - Borla Exhaust - TurboXS BOV - Custom CAI 02 Civic EX - MB Quart Reference 5.25" Components - Rockford MTX 8" Subs in the doors - Alpine Type S Rear Fills - 2x Alpine SWR-1042D Subs in a custom fiberglass box - Alpine F345 Amp for the front doors - Alpine M605 on each Type R - Phoenix Gold wiring - Alpine CDA-9855 Head Unit - Alpine Amp link - 2x Rockford Fosgate 1 Farad Caps - The best Viper 791 alarm install ever |
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Oct 3, 2005 - 7:04 AM
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Enthusiast Joined May 6, '05 From PA Currently Offline Reputation: 4 (100%) |
No, all of you misunderstood me. I know diodes only let power feed one way and I was under the impression that the unlock wires going from the alarm brain to the door control module had to be diode-isolated. It says this in all of my alarm instructions and it also says it in the alarm install guide. I used 1AMP on my car, and used 21mA on my sister's 6GC, and it worked fine, no problems after a thorough test.
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