Where to ground amp on a C4?
Le Mans Master
Joined: Mar 2001
Posts: 8,540
Likes: 0
Re: Where to ground amp on a C4? (bogus)
run a wire upto the battery negative post...
Anywhere there is a bolt, undo it, shave away the paint around the connection, put a screw down onto a wire tab (I have no clue what it is called...). Ground wire should not be longer than 3 feet unless it is heavy gauge.
Safety Car
Joined: Jul 2001
Posts: 4,178
Likes: 2
From: Windermere FL
Re: Where to ground amp on a C4? (dhmurray)
Battery is to far. Go under the car. If you look behind the rear driver's side tire, you'll find the ground strap to the power antenna. Drill a hole through the rear pocket behind the drivers seat that is the same size as the wire and ground there. Seal the hole around the wire with silicon.
Team Owner
Joined: Apr 2002
Posts: 28,747
Likes: 41
From: Frankenstein never scared me. Marsupials do, because they're fassst…and they DART, THAT'S crazy!
St. Jude Donor '03 thru '26
Re: Where to ground amp on a C4? (SlowJoe)
I have been through a C4 top to bottom looking for good, convenient ground spots and I can tell you unequivocally. The seat bolt that bolts the seat to the floor pan is a solid 12-volt ground. Frame rails run under the fiberglass floor pan for the seats to bolt to. Try the seat bolt in back of either the driver or passenger seat; depending on what side of the car you want your amp on. No drilling and uses much less ground wire which is GOOD! Put your multimeter on it and see for yourself. My system is grounded there and I have run 3 amps simultaneously off that ground spot and am running two amps on it now. Make sure it is clean and you will be set. ;)
Hope that helps. :seeya
Hope that helps. :seeya
Melting Slicks
Joined: May 2000
Posts: 2,148
Likes: 1
From: Chandler AZ
Re: Where to ground amp on a C4? (The^Nomad)
Plenty of metal under the plastic trim- beside the seats in the B-pillars and above in the pseudo roll bar. Also the vertical surface directly behind the seats is corrugated steel and part of the frame; it's accessible where the rear wheelwell carpet comes forward over it- or from inside the storage compartments behind the seats. Oh also a big chuck of metal where the lower ball mounts for the hatch lifts screw in.
