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E-Body Challenger "Reverse Light" Grommet Hole?

Posted By: filmsurgeon

E-Body Challenger "Reverse Light" Grommet Hole? - 03/18/13 09:24 PM

E-Body/Challenger/'Cuda: Can anyone tell me what the size of the hole should be for the "Reverse Light" grommet (firewall location between the booster/master cylinder/brake assembly, and the upper-right bulkhead connector hole)? Thanks.

Attached picture 7631108-ACfirewalllocations70Challenger.jpg
Posted By: 00snake530

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 03/19/13 12:06 AM

i can measure in the morning if no response by then
Posted By: filmsurgeon

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 03/19/13 08:07 AM

I bought the harness from Evans Wiring. It has the grommet attached. I figured I could measure with a digital caliper. I thought maybe asking here would confirm the grommet size. The diameter measurement I got is 0.750" (the part of the grommet that would mate with the hole). So, I guess I'll drill a 3/4" hole. Thanks for the feedback.

Attached picture 7631865-reverselightharnessgrommet.JPG
Posted By: mccannix

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 03/19/13 04:03 PM

You are correct on the 3/4 in hole for 1970, assembly shown on left.
1971 shown on right used the larger 1 inch hole.

Attached picture 7632063-4484143-rev8.JPG
Posted By: filmsurgeon

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 03/19/13 06:27 PM

Quote:

You are correct on the 3/4 in hole for 1970, assembly shown on left.
1971 shown on right used the larger 1 inch hole.




Thanks for the confirmation.
Posted By: Finoke

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 04/21/13 01:37 AM

Im adding a reverse light on my 70 cuda now that i converted to a 4 spd.

I cant seem to find where the light wire goes. At least not on my wiring diagrams.

So reading your post it goes through the firewalll to the engine compartment ? Were does it go from there?

Sorry for the post hijack
Posted By: HEMIDOG 70

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 04/21/13 08:15 PM

Here's another pic of an e body firewall. I got it from moparts and saved it.

Attached picture 7676669-Wireringdiagram.jpg
Posted By: HEMIDOG 70

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 04/21/13 08:27 PM

Quote:

Im adding a reverse light on my 70 cuda now that i converted to a 4 spd.

I cant seem to find where the light wire goes. At least not on my wiring diagrams.

So reading your post it goes through the firewalll to the engine compartment ? Were does it go from there?


The harness from the trans switch plugs into the bulkhead connector right below where your wiper motor plugs in. A pigtail wire comes out of that connector and plugs into the one from your dash light. That comes through the firewall with the heavy black grommet as pictured in the other replies.



Sorry for the post hijack


Posted By: Finoke

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 04/21/13 09:19 PM

Quote:

Quote:

Im adding a reverse light on my 70 cuda now that i converted to a 4 spd.

I cant seem to find where the light wire goes. At least not on my wiring diagrams.

So reading your post it goes through the firewalll to the engine compartment ? Were does it go from there?


The harness from the trans switch plugs into the bulkhead connector right below where your wiper motor plugs in. A pigtail wire comes out of that connector and plugs into the one from your dash light. That comes through the firewall with the heavy black grommet as pictured in the other replies.



Sorry for the post hijack







thanks Hemidog! Excellent!
Posted By: Topcat

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 04/22/13 12:28 AM

71's the grommet is located below the gas pedal from what I heard.

Attached picture 7676944-Reversefirewallhole1.JPG
Posted By: moparmojo

Re: E-Body Challenger "Reverse Light" Grommet Hole? - 04/23/13 01:15 PM

Thanks for the detail pics.
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