I bought a set of the LED headlight bulbs that was deemed directly compatible with my OEM headlight bulbs. Big mistake. My digital dash went haywire and the engine began cutting out and otherwise ran poorly. Then the below dash relay switches were overheating and burning out. Finally, I realized that those LED's were screwing up my car big time, but only after I changed out my distributor, coil, cap and fusible links in a rain storm. Now I am back to the the OEM bulbs, have installed all new relay switches, and keep a handful of spare relay switches to pop in if I have any further problems. 524,000 miles on my 86 gl10 turbo.