weld a bolt m6 to chassis in the points you mentioned and one near the battery for the earth neg supply.
nitram have you got your cat 2 yet?
let us know when you have and ill tell you what and where.
Is it OK to have multiple earthing points on the chassis (ie. using the chassis tubes to carry current back to the battery)? I hear of so many
electrical gremlins linked to poor earthing.
I was thinking of having 3 points - one at the front for headlights+fan, one under the dash for instruments, and one at the back for fuel pump +
lights.
Or do some people do without chassis earthing altogether and run cables all the way to the battery?
i have an earth point in every corner and one behind the dash plus the battery -ve earthed to the chassis. no problems yet,used m6 nutserts for earth points with bolts and ring terminals.
I have an earth point at the back for rear lights and fuel level sensor. It is quite common. No problems yet.
There is so little extra effort in fitting a bit of wire into the loom that I wonder why looms are made without them. The hassel of drilling and
tapping a hole in the rear of the chassis is easily outweighed by running a 2 metre length of wire back to the battery.
You could always have an insulated return system where all earths come back to the battery. When I say all i mean all the main one/s which are joine to many minor ones with heatshrink terminals and sleeving.
quote:
Originally posted by smart51
I have an earth point at the back for rear lights and fuel level sensor. It is quite common. No problems yet.
There is so little extra effort in fitting a bit of wire into the loom that I wonder why looms are made without them. The hassel of drilling and tapping a hole in the rear of the chassis is easily outweighed by running a 2 metre length of wire back to the battery.
i agree with nitram the chassis is the biggest conducter why not use it, plus if you run seperate earths youve got twice the chance of getting a fault
and twice the headache trying to find it.
weld a bolt m6 to chassis in the points you mentioned and one near the battery for the earth neg supply.
nitram have you got your cat 2 yet?
let us know when you have and ill tell you what and where.
K33ts, I sent you a u2u.
Can you email me the details before I buy?
It will probably be a Toad!
I would use at least an M8 bolt for the Main Battery to Chassis connection.. Remember there is 200-300 Amps flowing when starting. IMHO M6 isnt
enough. ie you want a good sized ring tag suitable for the large current flow (worst case).
I welded a bit of 3mm Angle Iron to the chassis with a M8 hole in it. Hmmm That might have even been a M10
Earth Lug (My Welding!!!)
Through the chassis is the normal way
Earth points at both front corners.
Main earth point in engine bay -- for engine. battery and ECU earth -- use a tag strip with two holes -- one for the main heavy duty connections the
other for the ignition.
Earth point under scuttle for instruments.
Earth points at both rear corners.
[Edited on 19/3/06 by britishtrident]
quote:
Originally posted by nitram38
You would have to double the amount of wires or use a very large single cable. It is simplier to use the chassis.
Thanks guys! I will stick to the original plan of using chassis earthing points at front, rear and under dash.