2010 TE310 accessories plug in headlight question

I’m trying to mount a gps and heated grips on my te310

I found and accessory plug I believe in the headlight. But each time I connect something to it. The voltage drops to 6v or 3v.

I’m trying to use it to trigger a relay and that doesn’t work either.

Any ideas what’s this plug is for if not for accessories??

Hi there, as per the electric diagram of that model and if the cable colors (Y=Yellow / Gr=Grey) I see on the picture are stock, that connector seems to be for 'MAP Switch', that is to switch to a different ignition/fuel map on the ECU, normally one is for lower traction (rain) and the other one gives more aggressive power. Closed circuit would be one map, open the other...




Cheers.

For the heated grips I would run a direct cable to the battery, using an inline fuse and a switch to turn it off, as well as a LED 'lamp' to see if it's turned on so you don't forget it draining the batt.

Hurky is correct. That is the map switch circuit.
It's best to run a seperate fused power circuit from the battery for the grips.