The BMW Combox Retrofit Harness is specifically designed for retrofitting a Combox system in a BMW vehicle. It may come with different color. We customized this. It's for the model with both TCU and MULF. If you need TCU only or MULF only version, please message me.
I'm selling this just because I was a DIYer and didn't find a good harness. I found a DIY guidance to build the harness in a bimmer DIY forum. However, if I purhcase all parts and make a harness, the cost is much higher than this. I sent the guidance to a professional harness provider and got the customized harness quickly. I successfully used that on my F10 528i 2011 and decided to order more for resell to help other friends in the similiar situation.
Do your DIY research before you purchase it. If you don't know how to do the DIY and coding job, please do not buy. Please only purchase it when you know how to use this.
A few months ago, we do see one customer didn't do his research but purchased that. That's not my target customer.