5 Pin Relay/12v socket/Ignition advancer

duncanpage · Scooby Slapper Joined: 12 Dec 2006 Karma :

Hi all

I'm after some advice on a 5 pin relay. I fitted the relay using the wiring diagram for a 4 pin relay that some of you kindly provided. However my relay has a 5th pin in the middle. Does anyone know if this 5th pin will be another positive or what else it might be?
The relay is currently used to provide power to my Hot-Grips when the ignition is switched on, if there's another positive pin I'd like to wire in a 12v cigarette lighter socket into an underseat tray I'm building for my GPZ500S to power my satnav.
Does anyone have any advice for wiring this in? I think I read somewhere a 10amp fuse was a good idea to wire into the positive lead of the 12v socket, I've bought an inline fuse holder already.
Will the alternator (or whatever the bike equivalent is) be able to power the satnav, Hot-Grips, lights etc in the winter?!

As you can probably tell I'm a novice at electrical stuff so any advice is welcome.

Also while I'm at it, I'm looking for an Ignition Advancer for a GPZ500S, can anyone give advice on where I can get one from? I've heard they improve mid range tourque without having to change teeth on the sockets. I've just fitted new sprockets and chain so don't want to have to change these just yet!

Thanks

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

The 5th pin tends to have power when the relay has no power going through it dependant on relay type.

hmmmnz · Super Spammer Joined: 22 Aug 2006 Karma :

a 5 pin relay works like this
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stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

There are a few different types of five pin relay.

You can tell by the numbering on the pins.

If it has two number 87 pins, it is a 'twin' relay, the two pins are linked together at all times and are switched on at the same time when a current is applied to pin 85.

If it has an 87 and an 87b it is a 'double' relay. The two pins are not linked when the relay is off, they switch on at the same time when a current is applied to pin 85.

If it has an 87 and an 87a it is a 'changeover' relay. Either one or the other pin is switched on at all times. 87a is on at rest, 87 is on when when a current is applied to pin 85.

Either a twin or a double relay would work fine for what you want. A changeover would not.

I doubt a satnav draws much power. Heated grips could well run down your battery if used on multiple, short runs with the lights on.
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