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I have a 1986 Komfort RV built on a heavy duty GM ...

Sent to Car Experts May 16 11:59 PM

I have a 1986 Komfort RV built on a heavy duty GM chassis. The backup lights don't work and the fuse and bulbs look OK. I suspect the steering column harness but don't have the schematic. Any ideas?

Thanks.

 

Optional Information:
1986 General Motors 454

Customer (name blocked for privacy)
Status:  Closed   Value: $15
Answer
May 17 12:22 AM (23 minutes and 18 seconds later)
         
ACCEPTEDCheck Mark

its a pretty basic system if it still has the gm column shifter then the switch is mounted down on column at floor board it is both a nuetral safety and a back up light switch. be aware on the motorhome its not uncommon for there to be fuses on the GM chassis side and the coach side. I would check for voltage into and out of the switch and is that is all ok the go back to the lamp fixtures I usually find problem back there either bad ground, bad connection or corrison. check for voltage at lt green wire if that is still the correct color on coach side and if you have it there then either you have a bad ground or socket/ corrison problem. below is a basic wiring diagram for that age GM chassis

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Thanks Tim
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Tim Basham -- ASE Certified Master Technician -- 100% Positive Feedback on 271 Car Accepts
30 year multi line tech ASE cert master tech ASE engine machinist. Specializing in 4WD +++
Reply
May 17 2:54 AM (2 hours and 31 minutes and 51 seconds later)
         
Reply to Tim Basham's Post: I will accept your answer - I'm sure I'll find the problem if I follow your advice.

Your basic wiring diagram didn't come through for some reason. I would appreciate it if you could just email it to me.

Thanks,
Claudio
Customer (name blocked for privacy)
Answer
May 17 11:14 AM (8 hours and 19 minutes and 56 seconds later)
         
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Tim Basham -- ASE Certified Master Technician -- 100% Positive Feedback on 271 Car Accepts
30 year multi line tech ASE cert master tech ASE engine machinist. Specializing in 4WD +++
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