Have you tried to squeeze the radio lead with plyers as sometimes when the old lead is taken out, the hole for the radio lead expands and when the vxmmi radio lead is put in the connection is not full or loose. Remember not to squeeze it too tight as you might have trouble removing it. If that don't work, we do sell radio boosters for the vxmmi which should solve your signal problems, i hope anyway. The price for this is £20 delivered uk only, prices for Europe £25. Contact me on [email protected] to place an order and I will send you a paypal invoice.
Another problem is when aftermarket shorter aerials are used it may work perfectly with the standard stereo, but when stereos are used such as the vxmmi, the signal can get weak. The best aerial to use is the standard one that comes with car or a longer one that can pick up more of a signal.
i to have had poor reception on my sons asta when we fitted the vxmmi. supplied with the kit is a arial addaptor signal seperator as the arial sockets are different connectors . this adaptor has two gm arial sockets that feed into a small alloy tube and a std arial socket that fits ino the vxmmi ours had a wire that was not soldered correctly inside this alloy tube ,to test use a volt meter on continuaty between each end ours was very high resistance as is a broken wire , to get into this tube ther are 5/6 punch marks /dimples at one end use a small hacksaw to cut into , but not all the way through just cut through the alloy 20 swg and open like a small can.slide the alloy tube off the metal end , inside is a small circuit board ours had a wire that had come unsoilderd of the vxmmi end have you connected the blue wire to the wire marked switch i think its pink in colour .they must have out sorced this addaptor to some sweat shop in asia me thinks hope this helps reg mr maz
I have the Eonon d5103, and to be fair the radio signal is terrible, think there was a link on the eonon pages relating to an aerial amp from car audio direct that was supposed to help clear up the signal.