Comnche tj Posted August 2, 2018 Share Posted August 2, 2018 How is everybody, I'm having an issue with backup lights on my 1988 comanche 5speed, checked all fuses under dash ok, checked 4 wire connector under truck no voltage, any suggestions? Thanks Link to comment Share on other sites More sharing options...
Pete M Posted August 2, 2018 Share Posted August 2, 2018 do you have voltage at the switch on the trans? Link to comment Share on other sites More sharing options...
Comnche tj Posted August 2, 2018 Author Share Posted August 2, 2018 (edited) 34 minutes ago, Pete M said: do you have voltage at the switch on the trans? 44 minutes ago, Comnche tj said: How is everybody, I'm having an issue with backup lights on my 1988 comanche 5speed, checked all fuses under dash ok, checked 4 wire connector under truck no voltage, any suggestions? Thanks I don't have voltage on the two pin connector to switch, and on the 4 wire connector coming from top of engine Edited August 2, 2018 by Comnche tj Link to comment Share on other sites More sharing options...
Eagle Posted August 2, 2018 Share Posted August 2, 2018 You don't have voltage ... where? Did you read the entire thread above? Start be verifying whether or not you have voltage TO the switch. If so, jumper the contacts on the switch terminal and see if the backup lights wwork when the switch is bypassed by a jumper. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 2, 2018 Share Posted August 2, 2018 TRANS fuse installed in the fusebox? That's the power for the reverse lights. Link to comment Share on other sites More sharing options...
Comnche tj Posted August 2, 2018 Author Share Posted August 2, 2018 3 hours ago, cruiser54 said: TRANS fuse installed in the fusebox? That's the power for the reverse lights. Yes all fuses ok including trans, ddont know where else to check Link to comment Share on other sites More sharing options...
Pete M Posted August 2, 2018 Share Posted August 2, 2018 try jumping the wires at the switch and see if that does anything. and be sure to check each wire for voltage with an independent ground rather than only from one to the other. Link to comment Share on other sites More sharing options...
Comnche tj Posted August 2, 2018 Author Share Posted August 2, 2018 4 hours ago, Comnche tj said: Yes all fuses ok including trans, ddont know where else to check Sorry for taking your time, thanks for answering , will not bother you again thank you Link to comment Share on other sites More sharing options...
Jeep Driver Posted August 3, 2018 Share Posted August 3, 2018 19 hours ago, Comnche tj said: How is everybody, I'm having an issue with backup lights on my 1988 comanche 5speed, checked all fuses under dash ok, checked 4 wire connector under truck no voltage, any suggestions? Thanks 3 hours ago, Comnche tj said: Sorry for taking your time, thanks for answering , will not bother you again thank you Yeah, I know. If you are getting no power to the 4 pin connector, you need to look behind the fuse block. Just because the fuse looks OK, does not mean that the connection behind the fuse is OK. Standard trans MJs and XJs are known for having corroded fuse blocks. Link to comment Share on other sites More sharing options...
Eagle Posted August 3, 2018 Share Posted August 3, 2018 2 hours ago, Jeep Driver said: Yeah, I know. If you are getting no power to the 4 pin connector, you need to look behind the fuse block. Just because the fuse looks OK, does not mean that the connection behind the fuse is OK. Standard trans MJs and XJs are known for having corroded fuse blocks. VERY good point. Link to comment Share on other sites More sharing options...
Comnche tj Posted August 3, 2018 Author Share Posted August 3, 2018 Thanks a lot for that tip ill check behind de fuse block , will let you know how it went thanks again Link to comment Share on other sites More sharing options...
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