bosal 013-839 Manual Del Usuario página 4

Trailer power supply:
7.
3-input housing (yellow and white/brown leads) is provided for expanded socket functions. Put this part of lead
bunch behind the trim. To expand socket functions it is necessary to order the following parts:
Function "charge line and earth" part no. 015-069
Remarks regarding trailer indicator operation:
Trailer indicator defect is signalled by a control light of the vehicle by increased flashing frequency!!
Assembly instruction for customers use.
Fix all the leads with supplied band clips, assemble previously disassembled parts.
Connect accumulator and check all vehicle functions with connected trailer or other suitable testing device.