Golddigger: All the relay is, is a electromagnetic switch. With the trigger voltage applied to the coil of the relay, the contacts close and pass the voltage onto the device ie: heated clothing. If your control will turn completely off, you may not need the relay.
If you use a relay, you can either use a switch to control the trigger voltage, so that the relay does not get turned on until you turn the switch on. This would keep voltage off the circuit for the clothing till you need it.
Or you can use the voltage from the Accessory terminal to as a trigger voltage to turn the relay on when the bike is turned on.
How much current does each piece of clothing draw. ? That would determine the current handling requirement of the relay, I'm thinking one 20 amp. relay would be enough. to handle both
You would want a 12 volt automotive relay with a current ratting of at least twice the total current required for the clothing. You do not want to fry the contact.
If you want I can send you schematic drawing of how I just wired some lights on my wing using a relay, same principle.
If you have a Pep Boys auto parts , I'm told they have Pilot Relays and that the NV-RY1 is a 12 volt 20 amp replacement for the 12volt 20 amp relays on the 1500 Gold Wing.
We don't have Pep boys up here so I don't know for sure.
Here's my e-mail
[email protected]. if you want to contact me directly.
From the Northwest Corner
Ron