Absolutely!
To install a 7-way connector on your 1990 Isuzu NPR you will first need to install a 4-way connector. Since there is not a custom 4-way connector harness you will need to use the Upgraded Modulite Vehicle Wiring Harness Kit # C59236 which includes a circuit tester to verify the functions of your factory wiring to make sure you make the correct connections.
The 4-way connector will wire as follows:
White wire to the vehicles frame
Red wire to brake light
Green wire to passenger... view full answer...
The Westin SureStep Replacement Bumper part # 61001-95700 that you referenced would use a standard license plate frame like the part # CR15350. I attached a picture that shows where you'll attach the bracket to. view full answer...
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