ground

the main ground wire is on firewall to back of engine block or head,but what neg ground are you looking for.battery neg ground is - side of battery to front of block,really need more info on the ground you looking for.

I replaced left front crash sensor to eliminate air bag light.Manual suggested look for proper grounding or maybe need srs module reset.I will make sure all grounds are connected I will let you know what I find. Thanks again for your help. Billy

original question was what was making airbag light stay on.I went to salvage yard and found srs module off same year and model but not with dent on bumper like mine had Lights out Thanks papa

you welcome.

How to tell if you got a positive ground in a 98 explorer.

Make sure no lights are surged an no whistles in speakers

Have a 2010 Sport trac 4.6 Ck engine light on. Shows 5-6 codes. Ford replaces cpu. After 15 miles check engine light on again. Shows 5- 6 codes. Ford replaces cpu again. After 8 miles ck engine light again. Shows one code #433 I take car hone while waiting on an appointment from them. I remove battery terminals, i clean the posts and clamps. I then goto each grounding nut under the hood attached to the body of truck and looses and clean with my little wire brush. I leave disconnected over night with headlight switch on. I then reconnect. Light don't come on. I get to 50 miles and I bring for inspection. It passes. No codes. What happened? And was my original comp bad?