relays, are the necessary?

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negreac

Member - Posts: 25

Joined: March 07, 2007

Location: Michigan, United States

Posted: March 13, 2007 at 4:35 PM / IP Logged

Ok so I just got a universal SPAL window kit, and to my suprise it doesn't run any relays, it just runs the window motors right off the switch. I'm also about to purchase a lock kit and it appears to do the same thing. Is there a problem with this??? The wire seems to be about 14 guage and the fuse is rated at 30 amps for the windows. Anyone know how much 3 8 lb lock actuators will draw? These locks would act on teh exact same principal. Uses a 5 pin master switch.

profuse007

Gold - Posts: 2,015

Joined: October 20, 2002

Location: Texas, United States

Posted: March 13, 2007 at 5:38 PM / IP Logged

I would recommend using relay(s) for the window setup. The relay diagram can be found in the relay section.

The reason for relays are so the currents doesn arc b/t the switch and the lines. Too much arcing is no bueno.

Houston,TX

"The two most common elements in the universe are H+ and stupidity" (Ellison).

Mike M2

Platinum - Posts: 2,652

Joined: June 29, 2005

Location: United States

Posted: March 13, 2007 at 8:42 PM / IP Logged

You don't mention what type of car you are installing this in so we can only guess. Spal kits are like most factory windows, that being 5 wire type switches(the switches have a 12volt input, 2 pins thst rest at ground and 2 that are motor leg. The 6th pin doesn't count as it is for illumination). As long as you have ample amperage supplied to the switches there is no need for a relay. Most ignition switches can handle the load fine but some are under 30 amps in which case a relay would be needed. Tell us the car you are installing them in and then you'll know for sure.

As for the locks, i guess the kit you have has 2 wire actuators if they have 5 wire switches. Actuators don't really use that much amperage to operate and most of the time you can get the power for them at the igntion switch also(again, depending on what car).

Mike M2

Tech Manager

CS Dealer Services

negreac

Member - Posts: 25

Joined: March 07, 2007

Location: Michigan, United States

Posted: March 13, 2007 at 9:04 PM / IP Logged

I have an aux. fuse panel I will be wiring them to so overloading the ignition circuit really isn't a concern. They are going into a '99 jeep wrangler. The only down side to wiring the actuators like the windows is that I won't be able to actuate them via the alarm since they have negative outputs. Not sure if the wiring is the same for the lock setup but I would assume that it is. Have tried to think of a couple setups where I can use relays to make it work but I won't know for sure until I get the spal lock switch kit and test the switch.

negreac

Member - Posts: 25

Joined: March 07, 2007

Location: Michigan, United States

Posted: March 14, 2007 at 10:00 AM / IP Logged

Well I think I figured out a way to make 'em work. Came to me right after I posted last night. Just going to run 2 relays one for lock and unlock. The grounds for the switch will be run to each, and will remain grounded at rest. When teh relay is activated by the negative pulse from teh alarm it will switch the relay to a power source instead of teh ground. Should work. Here's a quick diagram I drew.

relays, are the necessary? -- posted image.

negreac

Member - Posts: 25

Joined: March 07, 2007

Location: Michigan, United States

Posted: March 14, 2007 at 12:43 PM / IP Logged

Yeah, turns out I was wrong about how the switch works. The switch for theire aftermarket system is just a - trigger for their relays, much like how teh alarm works. Found a wiring diagram for it on their website, who would have thought.

SPAL Door Lock Switch Wiring Diagram

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relays, are the necessary?

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