Join Date: Apr 2002
Location: Mauldin, SC, USA
Re: Heated seat help.
Welcome to the site! Loads of great info and great folks here; I see you've already "met" one of the best.
You may not have a connector for a heated seat, depending on the trim level of your bike. In 1999 there were three trim levels: Standard, Icon and Custom. With the early '99s, only the Customs were prewired for heated seats. If your bike does not have chrome trim (mirrors, etc.), it's not a Custom. Later in the model year BMW changed the wiring harness so that all the bikes were prewired for the seats.
I have an early '99 Icon. I purchased a used heated seat and tried to install it; not only did I not have the connector for the seat, there's an empty slot in the fuse box where the heated seat circuit should be.
l learned that BMW offered a wiring harness extension to connect the heated seat to these bikes. $150 bucks or something; I purchased a grab bag of BMW electrical parts on eBay because it included one of these things. I had plugs and a relay; looked really great, except no one could figure out where the blasted thing connected to the bike! Even my local dealer's service department was stumped.
Refusing to be defeated, I cobbled up a temporary connection with a BMW plug. Later on I added an auxiliary fuse block and wired up my seat that way. I'm pretty cold natured so I really enjoy the warm seat in the Winter. Or early Spring. Or late Fall. Or mid-Autumn when you leave early in the morning...you get the idea.