Ok, first I want to apologize for asking the same question that has been asked 8000 times already. I am not sure if its from being dropped as a baby or just lack of functioning brain cells, but I am left scratching my head.

I have installed an aftermarket head unit (quality unit from China).
I ordered an antenna amplifier from Enfig and corrected the no AM/FM issue. Everything else works great except for the rear speakers.

I have been reading the forums about this subject and every post I read just makes matters worse. I can not for the life of me figure out how to get the back speakers to work. I replaced the Stock Symphony unit (Non Bose). When I pulled the HU it had three plugs (two black and one brown). Now they are all plugged into the new HU, but no rear speakers. Is there another plug I'm missing? The new HU came with all the appropriate harnesses, but I dont see a direct plug in for the rear speakers and sub (the one harness with the new HU has RCA jacks for LR, RR, and SUB).

I really didnt want to start cutting wires like most of the posts said without being sure. Any help, links or pictures would be greatly appreciated. I realize this isnt the most difficult problem, but I would like to do it right the first time.

Sorry if this is in the wrong place or if its been answered 100 times before.

 

Hi!
What's new HU name? If RCA jack wires come from upper 20 pin plug(other two are 8 pin plugs), then you have to LR RCA connect to HU LR plug and RR RCA to HU RR plug(if there's any). Then HU send signal to rear amp. Car sub is amplified with rear speakers, so SUB RCA not needed.
Hope this helps.

 

The HU is a Maxtrons MX-1203. I havent had time to pull the unit out to check the rear speaker connections. There were no RCA plugs for the original harness.

 

Correct!
RCA plugs are connected to your new HU harness, right? Now you connect them to new headunit rear RCA output plugs as i described in first post. To check at first that everything is correct, new harness RCA plug wires have to come out from new harness 20 pin plug, what you connect to original harness bigger 20 pin black plug. Product description say that there is 4-Channel RCA output ((FR,FL,RR,RL,No Subwoofer). So you use RR and RL. That's it.

 

Thanks for all the help ReinS, but I am back to square one. There are no RCA outputs from the new harness. I have an RCA Output Harness that comes off the back of the headunit but there is no where to tie it into the new harness. I am going to have to probably start cutting wires and splicing it in to the appropriate wires.

 

Sent PM.