ok i bought new headlights and i got the h4 harness where you plug and play. but when i put them in they looked scattered everywhere. i heard you need a 40 amp relay. how do i do this relay can somebody tell me. i looked up the write up about it but i can really tell what to do with the relay.. what type of wire do i need to use for it?

 

The H4 High Intensity headlamp harness/kit comes complete with correct guage wiring, properly rated relays and mounting hardware for only $20 (give or take a couple for tax/shipping). It's an easy and neat installation which is practically invisible when thoughtfully installed (routing parallel to factory cables, restrained with ty-wraps and wire covers). Why are you looking for more relays and how come it's "scattered everywhere"?

 

I installed the harness that upgrades for H4 bulbs in my 1998 jeep cherokee and when I turned the headlights on I had nothing ! Any guesses as to what I could have done wrong? Maybe the 98 is different? Help! Dave

 

It seems you are high jacking this thread, but as far as I know every upgrade of lights that will draw more AMP from ALT or BAT, also the wiring fuse and relays need to be upgrade also. If nothing works there is a wire not connected right, recheck with voltmeter everything also check the grounds

 

To the op:
The housings you are using are whats scattering the light. I would suggest a relay to relieve the load on the oem harness, it wont fix the scatter tho.

To the threadjack lol:


If yours has 2 pins, then you need to move your red wire over to where the same location thick red wire is in the pic above.

 

Hi everyone, I dont know how this site works yet apologies to all. My problem ended up being the grounds, I ran my grounds to the battery and wha-la great headlights!